math help? pleeease?

5 problems.



1.A driveway is 216 feet long, 12 ft wide, and 6 inches deep. How many cubic feet of concrete will be required to lay the driveway?

2.A fish tank is 21 inches tall and has a base that is 17 inches by 19 inches. You want to fill the tank to a depth of 19 inches. How much water will it take?

3.A rectangular planter 10 inches tall has a length of 22 inches and a width of 13 inches.A gardener fills the planter 1/3 full of potting soil. Which expression could be used to find the amount of soil used?

[a] 3 x 22 in. x 13 in. x 10 in.

[b] 3 x (22 in. + 13 in. + 10 in.)

[c] 22 in. x 13 in. x 10/3 in.

[d] 22 in. x 13/3 in. x 10/3 in.

4.A driveway is 162 feet long, 6 feet wide, and 6 inches deep. HOw many cubic yards of concrete will be required to lay the driveway? {hint: 1 cubic yard = 27 cubic feet.}

5.Sven is building a square sandbox with sides 7 feet long. He wants to put sand 0.75 feet deep in the box.How much sand should sven order?