A building contractor is building a backyard playground and wishes to put down rubber mulch to provide safety from falls. The contractor wishes to put the mulch in a pit in the shape of a rectangular solid 21 feet long, 14 feet wide, and 9 inches deep. a) Determine the volume, in cubic feet, of mulch the contractor will need. b) If mulch costs $11 per cubic foot, what will the cost of mulch be?

llm

Answered on Tue Apr 19 2022

Given that:-Dimensions of mulch in a pit in the shape of a rectangle

Length=21 feet

width=14 feet

Height=9 in220.5ch=0.75 feet (1 feet=12 inch)

now, (a)Volume of mulch (cuboid)=L*W*H

=21*14*0.75

=220.5 feet^3

(b)If mulch costs $11 per cubic foot, what will the cost of mulch be=?

totla mulch=220.5 feet^3

cost of 1 cubic foot=$11

so, cost of 220.5 cubic foot=220.5*11

=$2425.5