Urgent me! i need this done and dont know how to do it

Asphere has a diameter of 10 in. what is the volume of the sphere?

Which is the correct first step in finding the area of the base of a cylinder with a volume of 26x cubic meters and a height of 6.5 meters? v=bh 6.5=b(26x) v=bh v=26pi+(6.5) v=bh v=26pi(6.5) v=bh 26pi=b(6.5)

15 points what is the end behavior of this graph? & what is the asymptote of this graph?