Question

solve the area of a triangle for b and use the resulting formula to find the base of a triangle with a height of 6 ft. and an area of 9 ft. ^2.

Answer 1

The formula of the area of a triangle:


`A_\Delta=(bh)/(2)`

b - a base
h - a height

We have:
h = 6ft.and A=9 ft.²

substitute:


`(6b)/(2)=9\\\\3b=9\ \ \ |:3\\\\b=3\ ft.`

Answer: b = 3ft.