Mensurationmedium · Past Paper
A road roller is cylindrical in shape. If its diameter is 1 m and length 1.4 m, what is the area it covers in 500 revolutions?
A2200 m²
B4400 m²
C1100 m²
D220 m²
✓ Correct Answer: A — 2200 m²
r = 0.5 m, h = 1.4 m. CSA = 2πrh = 2 * (22/7) * 0.5 * 1.4 = 4.4 m². Total area = 4.4 * 500 = 2200 m².
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