High School Math : How to find the perimeter of a rectangle in pre-algebra

Study concepts, example questions & explanations for High School Math

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Example Questions

Example Question #1 : How To Find The Perimeter Of A Rectangle In Pre Algebra

Rectangle

What is the perimeter of the rectangle?

Possible Answers:

Correct answer:

Explanation:

The perimeter of a rectangle is the sum of the length of each of the four sides.

Since

substitute each in:

Example Question #1 : How To Find The Perimeter Of A Rectangle In Pre Algebra

Find the perimeter of a rectangle with length 8 inches and width 10 inches. 

Possible Answers:

Correct answer:

Explanation:

To find perimeter, add up all the sides. In a rectangle, there are 2 sets of identical sides so you can multiply the length by 2 and the width by 2 and combine them to get 36 inches.

Example Question #23 : Perimeter Of A Figure

Find the perimeter of a rectangle with a length of 20 inches and a width of 12 inches. 

Possible Answers:

Correct answer:

Explanation:

Add up all of the sides of the rectangle to get 64 inches. 

Example Question #1 : How To Find The Perimeter Of A Rectangle In Pre Algebra

What is the perimeter of a rectangle with a base of  and a height of ?

 

 

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this we plug the base and height into the equation 

With a base of  and a height of  our equation would look like 

Multiply and add the numbers together 

The answer is .

Example Question #1 : How To Find The Perimeter Of A Rectangle In Pre Algebra

What is the perimeter of a rectangle if the length is  and the width is ?

Possible Answers:

Correct answer:

Explanation:

The perimeter of a rectangle is .

Plug in our given information to solve:

 

Example Question #1 : How To Find The Perimeter Of A Rectangle In Pre Algebra

Calculate the perimeter of the polygon.

Number_1

Possible Answers:

Correct answer:

Explanation:

The perimeter is the sum of the length of all of the sides. We are given all of the side lengths in the figure, so we simply need to sum them together.

Example Question #7 : How To Find The Perimeter Of A Rectangle In Pre Algebra

What is the perimeter of a rectangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this, we plug the base and height into the equation .

With a base of  and a height of  our equation becomes .

Multiply and add the numbers together:

The answer is .

Example Question #1 : How To Find The Perimeter Of A Rectangle In Pre Algebra

What is the perimeter of a rectangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this we plug the base and height into the equation

With a base of  and a height of  our equation would look like 

Multiply and add the numbers together 

The answer is .

Example Question #9 : How To Find The Perimeter Of A Rectangle In Pre Algebra

What is the perimeter of a rectangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this we plug the base and height into the equation 

With a base of  and a height of  our equation would look like 

Multiply and add the numbers together 

The answer is .

Example Question #10 : How To Find The Perimeter Of A Rectangle In Pre Algebra

What is the perimeter of a rectangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, find the sum of all of the side lengths using the equation:

Substitute the given values for base and height:

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