Question

A= 40sq. in.

Find the value of x. If necessary, round to the nearest tenth.

Answer 1

8.9 inches

Explanation:

Area of a triangle is equal to base times height divided by 2.

`bh/2`

Base and height is x.

`xx/2=40`

Solve for x.

`x^2=40 * 2`

`x^2=80`

`x=√(80)`

`x=8.944272`

Answer 2

Just like in the other question, we can write:

40 = x * x / 2

40 = x² / 2

x² = 80

x = ±√80 → √80 → 8.9