QQuestion
The lower part of an ice-cream is conical and upper part is hemispheric with same circular base. If the height of the cone is 9cm and radius of the base 2.5 cm. Find the volume of the ice-cream.
✓Answer
Cone height (h) = 9 cm, base radius (r) = 2.5 cm
Volume of cone (V1) = 1\over 3 π·r²·h
= 1\over 3 × π × 2.5² × 9
= 18.75π cm³
Volume of sphere (V2) = 2\over 3 π·r³
= 2\over 3 × π × 2.5³
= 31.25\over 3 π cm³
Total volume = 18.75π + 31.25\over 3 π
= 87.5\over 3 π cm³
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