Two mark example and exericse problems — task. Mathematics State Board, Class 10.

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1. If the radii of the circular ends of a frustum which is \(45 \ cm\) high are \(28 \ cm\) and \(7 \ cm\), find the volume of the frustum.

Answer:

The volume of the frustum of a cone \(=\) \(cm^3\)

2. If the ratio of radii of two spheres is \(4:7\), find the ratio of their volumes.

Answer:

The ratio of their volumes \(=\)

i : i

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2. Two mark example and exericse problems