Which is false?
A metal pipe is 63 cm long. Its inner diameter is 4 cm and the outer diameter is 4.4 cm. Then,
A) Inner curved surface area = 
B) Outer curved surface area = 
C) Surface area of the end face = π(R 2 – r2){Because there are two circular faces}
D) R = 2.2 cm, r = 2 cm and h = 63 cm
Total surface area of a hollow cylinder 
77