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The diameters of two cylinders having th...

The diameters of two cylinders having the same height are in the ratio `1: 2 .`
a) What is the ratio of their radii?
b) What is the ratio of their volumes?

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The diameters of two cylinders having the same height are in the ratio `1: 2 .`
a) What is the ratio of their radii?
b) What is the ratio of their volumes?
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