Question

What is the triangle's base, b?

Answer 1

6.928 or 6.93

Explanation:

\sqrt{8^{2}-4^{2}}

Answer 2

The triangle's base is 9 inches.

Explanation:

The area of a triangle is calculated with the base × perpendicular height ×
`(1)/(2)`.

We already know the area is 18 square inches and the perpendicular height is 4 inches, so we can calculate the base.

4 × b ×
`(1)/(2)` = 18

2 × b = 18

b = 18 ÷ 2

b = 9