Perform the operation. (Write fractional answers in simplest form.) 8x/3 ÷ 6/7

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

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)

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.