Question

the ratio of the total surface area to lateral surface area of a cylinder whose radius is 80 cm and height is 20 centimetre​

Answer 1

Answer:

TSA of the cylinder = 2πr(r+h) sq.units

LSA of the cylinder = 2πrh sq.units

Ratio of TSA is to LSA = 2πr(r+h) / 2πrh

= (r+h) / h

= (80+20) / 20

= 5/1

Therefore, the ratio is 5:1