A hollow concrete masonry unit has actual gross dimensions of 7@5/8 in. * 7@5/8 in.* 15@5/8 in. (width * height * length). The unit is tested in a compression machine with the following results:...

A hollow concrete masonry unit has actual gross dimensions of 7@5/8 in. *
7@5/8 in.* 15@5/8 in. (width * height * length). The unit is tested in a compression
machine with the following results:
Failure Load = 250 kips
Net volume of 366.9 in.³

a. Calculate the gross area compressive strength.
b. Calculate the net area compressive strength.