As shown in adjoining figure one toy is made up of a cone and a hemisphere. Find
volume of a toy.
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Step-by-step explanation:
radius of both cone and hemisphere = 21cm
height of cone = 25
volume of toy = volume of cone + volume of hemisphere
volume of toy = 1/3πr^2h + 2/3r^3
πr^2(1/3×2h+2/3×r)
22/7 ×21 ×21 ( 1/3×2×25+2/3×21)
22×3×21 (2/3×25+14)
1386 × (50/3+14)
1386×92/3
42504 cm ^3
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