Question 957018
Total Volume=(10ft)(8ft)(4ft)=320 cu ft
Cavity Volume=(9ft)(7ft)(3.5ft)=220.5 cu ft
Volume of walls=Total Volume-Cavity Volume=320 cu ft-220.5 cu ft=99.5 cu ft
99.5 cu ft(1cu yd/27 cu ft)=3.69 cu yd
3.69 cu yd($98.95/yd)=$365.13 ANSWER: The cost of the concrete is $365.13