Volume of cone =
(1/3)pi *radius^2 * h =
(1/3)pi *(10)^2 * h =
(100/3) (3.14) * h =
(314/3) h
We can find the height of the cone (and pyramid) as follows
1884 = (314/3)h multiply both sides by (3/314)
1884 (3/314) = h = 18 cm
Volume of pyramid = (1/3)side^2 * height = (1/3)(20)^2 * 18 = (400/3) * 18 =
400 (18/3) = 400 * 6 = 2400 cm^2
So....the difference in volumes is 2400 - 1884 = 516 cm^2