40 percent
*how to solve*
First write 8 out of 20 as a fraction:
8/20
Then multiply both sides by 5 so that the denominator is 100:
40/100
40/100 = 40 percent
He should have found the GCF of 7 and 9, not 3 and 9.
V=317.53
in order to find the volume of a cylinder you use the formula V= (pi) (radius)^2 (height)
in this problem the diameter was 6.36 but you need the radius so you just divide 6.36 in half and you'll get 3.18
first you plug in the radius and height into the formula so it'll look like this V= (pi) (3.18)^2 (10) and get the answer which would be 101.12 then you times that by pi which is 3.14 and you will get 317.53 which is your answer
