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 23 feet long, 17 feet wide, and 9 inches deep.a) Determine the volume, in cubic feet, of mulch the contractor will need. When appropriate, use the key on your calculator.b) If mulch costs $9 per cubic foot, what will the cost of mulch be?a) The volume is ft³.(Type an integer or decimal.)