Question

The area of a triangle is 15 square inches

Answer 1

Answer:

6 inches

Step-by-step explanation:

The formula for the area of a triangle is

$Area = \frac{1}{2} (bh)$

b - base

h - height

the first step is to add the information that we know into the formula.

We know the area = $15 inches^{2}$ and the height = 5 inches

$15 in^{2} = \frac{1}{2} (b)(5)$

if we had both the base and the height, the next step would be to multiply

b x h then half the answer to work out the area but as we already have the area ($15in^{2}$) we need to work in reverse.

15 x 2 = 30

what is 5 multiplied by to get 30?

5 x ? = 30

30 ÷ 5 = 6

∴ the base = 6inches

to check if our answer is correct, we can place these numbers into the formula

A = $\frac{1}{2} (6)(5)$

A = $\frac{1}{2} (30)$   (30 ÷ 2 = 15)

A = 15$in^{2}$

I hope this was helpful :-)