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Question

A toy is in the form of a cone mounted on a hemisphere with same radius. The diameter of the conical base is 7 cm and the height of the toy is 14.5 cm. Find the volume of the toy

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Solution

Diameter of hemisphere=7cm
Radius of hemispherer=d/2
=72=3.5cm
Height of hemisphere=Radius of hemisphere
=3.5cm
Height of Toy=14.5cm
Height of cone=14.53.5=11cm
Radius of cone=3.5cm
Volume of cone=Volume of cone+Volume of hemisphere
=13πr2h+43πr3
=13227(3.5)211+43227(3.5)3
Volume of toy=320.83cm3.

1191582_1265227_ans_c165ed9bafd84e6abddecab1bf85b394.jpg

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