How to find the area of a triangle in pre-algebra

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Math › How to find the area of a triangle in pre-algebra

Questions 1 - 10

1

What is the area of a triangle with a base of and a height of ?

Explanation

The formula for the area of a triangle is $A=\frac{1}{2}b*h$ .

Plug in our given values.

$A=\frac{1}{2}b*h$

$A=\frac{1}{2}(16)*3$

2

What is the area of a triangle with a base of and a height of ?

Explanation

The formula for the area of a triangle is $A=\frac{1}{2}b*h$ .

Plug in our given values.

$A=\frac{1}{2}b*h$

$A=\frac{1}{2}5*12$

$A=\frac{1}{2}*60$

3

What is the area of a triangle with a base of and a height of ?

Explanation

The formula for the area of a triangle is half of the base times the height: $A=\frac{1}{2}bh$

Plug in our given information and solve:

$A=\frac{1}{2}bh$

$A=\frac{1}{2}*8*7$

4

What is the area of a triangle with a base of and a height of ?

Explanation

The equation for the area of a triangle is

$A=\frac{1}{2}(Base)(Height)$

We plug the base of and the height of into the equation to get

$A=\frac{1}{2}(8)(13)$

We then multiply to get the answer of .

5

What is the area of a triangle with a base of and a height of ?

Explanation

The equation for the area of a triangle is

We plug the base of and the height of into the equation to get

$A=(\frac{1}{2})(8)(28)$

We then multiply to get the answer of .

6

What is the area of a triangle with a base of and a height of ?

Explanation

The equation for the area of a triangle is .

We plug the base of and the height of into the equation to get $A=\frac{1}{2}(80)(120)$ .

We then multiply to get the answer of .

7

What is the base of a triangle if the height is and the area is ?

Explanation

The formula for the area of a triangle is $A=\frac{1}{2}*b*h$ .

Plug in our given values.

$50=\frac{1}{2}*b*20$

Combine like terms.

$50=(\frac{1}{2}*20)*b$

Divide both sides by to isolate .

$\frac{50}{10}=b$

8

What is the area of a triangle with a base of and a height of ?

Explanation

To find the area of a triangle, use the equation:

$Area=\frac{1}{2}(Base)(Height)$

Substitute the given values for base and height into the equation:

$Area=\frac{1}{2}(5)(14)$

9

What is the area of a triangle with a base of and a height of ?

Explanation

The equation for the area of a triangle is

$A=(\frac{1}{2})(base)(height)$

We plug the base of and the height of into the equation to get

$A=(\frac{1}{2})(4)(90)$

We then multiply to get the answer of .

10

What is the area of a triangle with a base of and a height of ?

Explanation

The formula for the area of a triangle is $A=\frac{1}{2}bh$ .

Plug in our given values and solve.

$A=\frac{1}{2}bh$

$A=\frac{1}{2}(4)(7)$

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