Question

Find the base, b, of a triangle of a triangle with an area, A, of 72 square feet and a height, h, of 8 feet.

Answer 1

18 ft

Explanation:

We know Area = 1/2*(base*height)

It is given,area = 72 ft²

Height = 8 feet

On putting the values,

• 72 = 1/2*(8*b)

On Solving,

• 72*2 = 8*b
• b = 72*2/8 = 9*2 = 18

Hence the base of the triangle is 18 ft.

Answer 2

18 feet

Explanation:

A = 72 square feet

h = 8 feet

b = ?

A = 1/2 ( b h )

72 = 1/2 ( b × 8 )

144 = b × 8

144/8 = b

b = 18 feet