Question

The ratio of the total surface area to the lateral
surface area of a cylinder whose radius is 20 cm and
height 60 cm, is
(a) 2:1
(b) 3:2
(c) 4:3
(d) 5:3​

Answer 1

Answer:4:3

Step-by-step explanation:

R=20cm

H=60cm

TSA=2πr(r+h)

CSA=2πrh

CSA ÷TSA = 2π×20(20+60)÷2π60×20

=4:3

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