A solid cylinder of radius r and height h is placed over another cylinder of same height and radius. The total surface area of the shape so formed is
A. 4πrh + 4πr2
B. 2πrh + 4πr2
C. 2πrh + 2πr2
D. 4πrh + 2πr2
Answer:D
A solid cylinder of radius r and height h is placed over another cylinder of same height and radius. The total surface area of the shape so formed is
A. 4πrh + 4πr2 B. 2πrh + 4πr2 C. 2πrh + 2πr2 D. 4πrh + 2πr2