alleryThe radius of a wheel is 21 cm. The number of revolutions to cover 924 m is
A350
B700
C1400
D500
Answer & Solution
Correct answer: B. 700
1. Circumference = 2 × (22/7) × 21 = 132 cm = 1.32 m.
2. Revolutions = 924 / 1.32.
3. = 700.
_Source: syllabus Mathematics, Ch 11 "Areas Related to Circles", §11.2_
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