Mensurationhard · Past Paper
A storage tank consists of a circular cylinder with a hemisphere adjoined on either end. If the external diameter of the cylinder be 1.4 m and its length be 8 m, find the cost of painting it on the outside at the rate of Rs 10 per m²? (Wait, volume question requested). Find the volume of the tank.
A13.75 m³
B12.32 m³
C15.4 m³
D10.5 m³
✓ Correct Answer: A — 13.75 m³
Radius = 0.7. Vol_cyl = π(0.7²)8 = 12.32. Vol_2hemi = 4/3π(0.7³) = 1.437. Total ≈ 13.75 m³.
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