I'm clueless when it comes to math

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet

Plz hurry finals a paper cup in the shape of an inverted cone is 8 inches tall and has a radius of 1.5 inches. how much water can the cup hold? use 3.14 for pi. round the answer to the nearest tenth. a) 12.6 cubic in. b) 18.8 cubic in. c) 37.7 cubic in. d) 56.5 cubic in.

E. which of the following is not a possible probability? a. 25/100 b. 1.25 c. 1 d. 0