The base of a triangular garden measures 5.5 feet. Its height is 3 feet. If 4 pounds of mulch are needed to cover a square foot, how many pounds of mulch will be needed to cover the garden?

1 Answer
May 5, 2016

33 pounds of mulch will be needed to fill in the triangle.

Explanation:

The area of the triangle must be determined. Then multiply the area of the triangle by #(4 "lb mulch")/(1"ft"^2")#.

The equation for the area of a triangle is #A=(bxxh)/2#.

The base equals 5.5 ft and and the height is 3 ft.

#A=(5.5"ft"xx3"ft)/2=8.25 ft"^2#

4 lb mulch is needed for each square foot.

#8.25"ft"^2xx(4"lb mulch")/(1"ft"^2)="33 lb mulch"#