Posted by **Caroline ** on Friday, April 15, 2011 at 7:00pm.

a concrete area measures 20ft on each side. the concrete slab will be 8 inches deep. how many cubic feet of concrete will be needed?

my set up is 20 x 20 + 32 ????

- MAth -
**bobpursley**, Friday, April 15, 2011 at 7:05pm
cubic feet= LWH=20*20*8/12=?

- MAth -
**Damon**, Friday, April 15, 2011 at 8:10pm
By the way, did you figure out that age problem?

if x = 10

then 6+3x = 36

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