Math
posted by Kalie .
1.Jamilla is building a square sandbox with sides 7 feet long. She wants to put sand 2 feet deep in the box. How much sand should Jamilla order?
A.98ft3
B.14ft3
C.49ft3
D.16ft3
2.What happens to the volume of a rectangular prism when each of the dimensions is doubled?
A.it doubles
B.it quadruples
C.it is six times as great
D.it is eight times as great
Please help me study!:[

Anyone?

1.A and 2.D

A storage company has rectangular storage area 20m long, 0.5m wide,and 2.8m high . How many cardboards boxes of dimensions 1m×0.5m×2.5m can fit into this storage area?

I am in connections academy and I just took the quiz. The answers are
1:D
2:A
3:D
4:B
5:B
6:A
7:D
8:D
These are all the right answers with the exception of 9 & 10 which are workpad. You are on your own for those. I got 100% on all of the multiple choice answers. Your welcome in advance! 
are absolutely positive ???