Step-by-step explanation:
These are fairly simple.
1) L x W x H = 6 x 9 x 2 = 54 x 2 = 108 yds^3
2) πr^2h = π(10^2)(23) = 2300π ft^3
3) Treat this one like a rectangular prism. L x W x H = 20 x 6 x 7 = 840 m^3
4) L x W x H = 30 x 24 x 18 = 12,960 ft^3
5) L x W x H = 11 x 11 x 19 = 2299 in^3
6) πr^2h = π(4^2)(16) = 256 yd^3
