Perimeter - Pre-Algebra
Card 1 of 344
An equilateral triangle measures three inches along its three equal sides. What is the perimeter of the triangle?
An equilateral triangle measures three inches along its three equal sides. What is the perimeter of the triangle?
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To find the perimeter of any object, simply add the length of each side together.
The best answer is:
nine inches
To find the perimeter of any object, simply add the length of each side together.
The best answer is:
nine inches
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Michelle wants to put a fence up around all four sides of her rectangular garden, which measures 10 ft. long and 15 ft. wide. How long will her fence be?
Michelle wants to put a fence up around all four sides of her rectangular garden, which measures 10 ft. long and 15 ft. wide. How long will her fence be?
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Since the perimeter marks out the distance around a shape, you can imagine yourself walking around a shape to find the perimeter. For a rectangle, you would walk the same length twice (once on each side) and the same width twice (once on each side). That's why you multiply both the length and the width by 2.
To find the perimeter, use the following formula:
Step 1: insert length and width into the formula
Step 2: solve
Since the perimeter marks out the distance around a shape, you can imagine yourself walking around a shape to find the perimeter. For a rectangle, you would walk the same length twice (once on each side) and the same width twice (once on each side). That's why you multiply both the length and the width by 2.
To find the perimeter, use the following formula:
Step 1: insert length and width into the formula
Step 2: solve
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An isosceles triangle measures two inches along its two equal sides, and one inch along its third side. What is the perimeter of the triangle?
An isosceles triangle measures two inches along its two equal sides, and one inch along its third side. What is the perimeter of the triangle?
Tap to reveal answer
To find the perimeter of any object, simply add the length of each side together.
The best answer is:
five inches
To find the perimeter of any object, simply add the length of each side together.
The best answer is:
five inches
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Susy's yard is 32 yards by 17 yards. What is the total perimeter of her yard?
Susy's yard is 32 yards by 17 yards. What is the total perimeter of her yard?
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Recall, the perimeter of a rectangle = 2*length + 2*width
Using the values given to us in the problem:
Thus, the perimeter is 98 yards.
Recall, the perimeter of a rectangle = 2*length + 2*width
Using the values given to us in the problem:
Thus, the perimeter is 98 yards.
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Sally has a rectangular garden that is surrounded by a 6ft-wide and 8ft-long fence. However, she wants to expand her garden so that it is twice as wide and twice as long. What is the new perimeter of her garden?
Sally has a rectangular garden that is surrounded by a 6ft-wide and 8ft-long fence. However, she wants to expand her garden so that it is twice as wide and twice as long. What is the new perimeter of her garden?
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We know the original garden is a 6ft by 8ft rectangle. sally wants to expand her garden so that the new rectangle is twice as long and twice as wide, so the new dimensions are 12ft by 16ft.
The perimeter of a rectangle with these dimensions is
12*2 +16*2 = 56.
We know the original garden is a 6ft by 8ft rectangle. sally wants to expand her garden so that the new rectangle is twice as long and twice as wide, so the new dimensions are 12ft by 16ft.
The perimeter of a rectangle with these dimensions is
12*2 +16*2 = 56.
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Choose the correct equation to solve for the perimeter of the rectangle.
Peter's backyard is a rectangle. Two sides of his lawn are 
feet long, and two sides of his lawn are 
feet long.
Choose the correct equation to solve for the perimeter of the rectangle.
Peter's backyard is a rectangle. Two sides of his lawn are
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The correct answer is 
Rectangles have 
sets of equal sides. In this example, one set of these sides is 
feet long and one set is 
feet long.
Therefore, multiplying the length of each side by two then adding these together will produce the perimeter.
The correct answer is
Rectangles have
Therefore, multiplying the length of each side by two then adding these together will produce the perimeter.
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Sarah has a purple square rug in the middle of her bedroom. The area of rug is 
. What is the length of each side of rug?
Sarah has a purple square rug in the middle of her bedroom. The area of rug is
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The correct answer to the question is 
.
The formula for the perimeter of a square is 
times the length of a side. We know this because all 
sides of a square are equal to one another.
Our unknown number is the length of each side which we set to 
. In this scenario, we know that the equation is 
.
In order to solve for 
, we divide each side of the equation by 
:
Therefore, 
is by itself on the left side of the equation. We know that 
.
In this equation, 
. Therefore, the length of a side of Sarah's rug is 
.
The correct answer to the question is
The formula for the perimeter of a square is
Our unknown number is the length of each side which we set to
In order to solve for
Therefore,
In this equation,
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If one side of a square is 
feet long, what is the perimeter of that square?
If one side of a square is
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To find the preimeter of a square you add all the sides of the square together.
Since the question told us the length of a side of the square, and we know that all sides of a square are equal we can plug this number into the following equation.
To find the preimeter of a square you add all the sides of the square together.
Since the question told us the length of a side of the square, and we know that all sides of a square are equal we can plug this number into the following equation.
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The area of a square is 
Find the perimeter of the square.
The area of a square is
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The formula for finding the area of a square is 
because each side is the same length. We are given that 
, so we can solve for s and get 
The formula for the perimeter is 
, but in the case of a square, 
, so the perimeter of a square is 
.
The formula for finding the area of a square is
The formula for the perimeter is
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You are designing a rectangular garden for the backyard, and you need to purchase fencing to put around it. If each 
section of fencing costs 
, and your garden is going to have a length of 
and a width of 
, how much will you spend on fencing to completely enclose the garden?
You are designing a rectangular garden for the backyard, and you need to purchase fencing to put around it. If each
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First, we need to find the perimeter of the garden to detemine how many feet of fencing we have to buy. We find the perimeter (P) of the rectangular garden using the following equation:
Now, we need to figure out how many sections of fencing we need to buy.
sections of fencing
Finally, we multiply this by the price per section.
First, we need to find the perimeter of the garden to detemine how many feet of fencing we have to buy. We find the perimeter (P) of the rectangular garden using the following equation:
Now, we need to figure out how many sections of fencing we need to buy.
Finally, we multiply this by the price per section.
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The perimeter of a chicken pen is equal to 22ft. If the width of the pen is 5 feet, how many feet is the length of the pen?
The perimeter of a chicken pen is equal to 22ft. If the width of the pen is 5 feet, how many feet is the length of the pen?
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In order to solve this problem you need to either know the formula for the perimeter of a rectangle or recognize there are 4 sides and two pairs of equal sides.
The problem states that the perimeter is 22 feet and that the width of the pen is 5 feet. Since rectangles have two pairs of equal sides we now can account for 10 feet of the perimeter. The are two remaining sides we do not know. Can you make an equation to represent what we know?
This says that the total perimeter (22ft) is to 10ft plus 2L (L is just a variable for length; we could just as easily have used x). Solve for L.
In order to solve this problem you need to either know the formula for the perimeter of a rectangle or recognize there are 4 sides and two pairs of equal sides.
The problem states that the perimeter is 22 feet and that the width of the pen is 5 feet. Since rectangles have two pairs of equal sides we now can account for 10 feet of the perimeter. The are two remaining sides we do not know. Can you make an equation to represent what we know?
This says that the total perimeter (22ft) is to 10ft plus 2L (L is just a variable for length; we could just as easily have used x). Solve for L.
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If the square has a length of 
, what is the perimeter of the square?
If the square has a length of
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Write the formula to find the perimeter of a square.
Substitute the side length.
Write the formula to find the perimeter of a square.
Substitute the side length.
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Find the perimeter of a square with a length of 
.
Find the perimeter of a square with a length of
Tap to reveal answer
Write the formula to find the perimeter of a square.
Substitute the side length.
Write the formula to find the perimeter of a square.
Substitute the side length.
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If the diagonal of a square is 
, what is the perimeter?
If the diagonal of a square is
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Write the formula to obtain the side given the diagonal for squares.
The perimeter of the square is four times the side.
The answer is 
.
Write the formula to obtain the side given the diagonal for squares.
The perimeter of the square is four times the side.
The answer is
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Find the perimeter of a square with a side of 
.
Find the perimeter of a square with a side of
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Write the perimeter formula for a square.
Substitute the side. Remember to distribute the four to each term within the parentheses.
Write the perimeter formula for a square.
Substitute the side. Remember to distribute the four to each term within the parentheses.
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What is the perimeter of a square with a side length of 
?
What is the perimeter of a square with a side length of
Tap to reveal answer
Write the formula to find the perimeter of a square.
Substitute the side.
Write the formula to find the perimeter of a square.
Substitute the side.
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Find the perimeter of a square in feet if the side length is 8 inches.
Find the perimeter of a square in feet if the side length is 8 inches.
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Convert the 8 inches to feet by dividing 12. There are 12 inches in a foot.
Write the formula for the perimeter of a square.
Substitute the side.
Convert the 8 inches to feet by dividing 12. There are 12 inches in a foot.
Write the formula for the perimeter of a square.
Substitute the side.
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Determine the perimeter of a square with an area of 5.
Determine the perimeter of a square with an area of 5.
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Write the formula for the area of a square.
Substitute the area and find the side.
A square has four equal sides. Multiply this side by four.
Write the formula for the area of a square.
Substitute the area and find the side.
A square has four equal sides. Multiply this side by four.
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Find the perimeter of a square with a side of 
.
Find the perimeter of a square with a side of
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Since the square has four equal sides, the perimeter is four times the side of the square. Write the formula to find the perimeter of a square. The variable 
represents the side length.
Substitute the side length into the formula.
The area of the square is 
.
Since the square has four equal sides, the perimeter is four times the side of the square. Write the formula to find the perimeter of a square. The variable
Substitute the side length into the formula.
The area of the square is
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If all sides of this square are equal, find its perimeter.
If all sides of this square are equal, find its perimeter.
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The perimeter of a shape is the total length of all sides.
With this shape, we know that all of its sides are equal. So, we know that each side is 7 in.
Using the definition of perimeter, we will find the total length of all the sides. To do this, we simply add all the lengths together.
7 in + 7 in + 7 in + 7 in = 28 in
So, the perimeter of this square is 28 in.
The perimeter of a shape is the total length of all sides.
With this shape, we know that all of its sides are equal. So, we know that each side is 7 in.
Using the definition of perimeter, we will find the total length of all the sides. To do this, we simply add all the lengths together.
7 in + 7 in + 7 in + 7 in = 28 in
So, the perimeter of this square is 28 in.
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