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Question

A toy is in the form of a cone mounted on a hemisphere of radius 3.5 cm. The total height of the toy is 15.5 cm find the total surface area and volume of the toy.

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Solution

Radius of hemisphere = 3.5 cm

Total height of the toy = 15.5 cm.

Surface area of cone

Therefore,

Surface area of cone

Surface area of hemisphere

Therefore,

Total surface area of the toy

Volume of cone

Volume of hemisphere

Therefore,

Total volume of the toy


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