Which one correct pls help and thanks

Math each whole number with a rational,exponential expression

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)

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect