An ice-cream is in the shape of a cone mounted on a hemisphere. The diameter of the base
is 12cms and the height of the cone is 8cms. Then find the volume of the ice-crea?
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h= 8cm
D= 12cm
r= 12/2= 6cm
volume of the ice cream= vol³ of the cone + vol³ of the hemisphere
= 1/3 πr²h + 2/3 πr³
= 1/3πr²(h+2r)
= 1/3 × 22/7 × 36cm²(8cm+2×6cm)
= 22/7 × 12cm²× 20cm
= 22×240cm³/7
= 5280cm³/7
= 754.285cm³
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