Question

2. If the diameter of a cylinder
is 28 cm and its height is 20 cm
then its curved surface area is

(a) 880 cm2
(b) 1760 cm2
(C) 3520 cm2
(d) 2640 cm2​

Answer 1

Answer:

d may be c

Total surface area of a cylinder of Radius "R" and height "h" =2πR(R+h)

Radius of the base of the cylinder =

2

28

=14 cm

Hence, total surface area of the cylinder =2×

7

22

×14(14+20)

=2992cm

2