Mensurationhard · Past Paper
A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, which is surmounted by another cylinder of height 60 cm and radius 8 cm. Find the mass of the pole, given that 1 cm³ of iron has approximately 8g mass.
A892.26 kg
B111.5 kg
C8922.6 kg
D450 kg
✓ Correct Answer: A — 892.26 kg
Vol1 = π(12²)220 = 31680π. Vol2 = π(8²)60 = 3840π. Total Vol = 35520π ≈ 111532.8 cm³. Mass = 111532.8 * 8 / 1000 ≈ 892.26 kg.
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