Mensurationhard · Past Paper
A solid is in the form of a cylinder with hemispherical ends. The total height of the solid is 19 cm and the diameter of the cylinder is 7 cm. Find the volume of the solid.
A641.67 cm³
B585.5 cm³
C720 cm³
D450 cm³
✓ Correct Answer: A — 641.67 cm³
Radius = 3.5. Height of cylinder = 19 - 7 = 12. Vol = πr²h + 4/3πr³ = π(3.5²)(12) + 4/3π(3.5³) ≈ 462 + 179.67 = 641.67 cm³.
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