1. The height of two cylinders are equal and their radius are in the ratio of 1 : 3 respectively. What is the respective ratio of the volume of the two cylinders?
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By: anil on 05 May 2019 02.24 am
Let heights of both cylinders = $$h$$ cm Let radius of first cylinder = $$r$$ cm, => Radius of second cylinder = $$3r$$ cm => Volume of cylinder = $$pi r^2h$$ $$ herefore$$ Required ratio = $$frac{pi(r)^2h}{pi(3r)^2h}$$ = $$frac{1}{9}$$ Thus, the respective ratio of the volume of the two cylinders = $$1:9$$ => Ans - (B)
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