Question

base radius of two cylinders are in the ratio 2:3 and their height is in the ratio 5:3. the ratio of their volumes is ?

Answer 1

Answer:

20:27 and 10:9

Step-by-step explanation:

Let radii be 2r and 3r respectively

and height be 5h and 3h respectively  

Volume ratio = Pi*(2r)^2 5h / Pi*(3r)^2 3h = 20:27

Curved surface area ratio = 2 Pi*(2r) 5h / 2 Pi*(3r) 3h = 10:9

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Answer 2

Let radii be 2r and 3r respectively

and height be 5h and 3h respectively  

Volume ratio = Pi*(2r)^2 5h / Pi*(3r)^2 3h = 20:27

Curved surface area ratio = 2 Pi*(2r) 5h / 2 Pi*(3r) 3h = 10:9

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