Question

The radius of the base of a right circular cylinder is 5.5 cm and its height is 6.5 cm. The ratio of the total surface area of the cylinder to its curved surface area is ?​

Answer 1

Answer:

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Step-by-step explanation:

Required ratio = (2πrh + 2πr^2) : 2πrh

= 2πr (h + r) : 2πrh = (h + r) : h

= (6.5 + 5.5) : 6.5 = 12 : 6.5 = 24 : 13

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