Someone answer this and try hard. i selected the highest amount of points to give. it was 90, but it doesn't always come out as 90.

Volume of a cylinder = PI x r^2 x H

r = 4 so r^2 = 4^2 = 16

h = 3

Volume = 3.14 x 16 x 3 = 150.72 ft^3

 it doesn't say how to round the answer so you may need to round it

Yea, thats the right answer 
VV

Well I don't know !
Let's find it together:

The factors of  12  are  1,  2,  3,  4,  6,  and  12 .

The factors of  20  are  1,  2,  4,  5,  10,  and  20 .

The factors of  36  are  1,  2,  3,  4,  6,  9,  12,  18,  and  36 .

The common factors of  12,  20,  and  36 (the ones that
show up on all three lists) are ...

                       1,  2, and  4 . 

The greatest one of these is  4 .