Question : The radius of a wheel is 21 cm. What is the distance (in cm) travelled by the wheel in 10 revolutions?
Option 1: 660
Option 2: 1320
Option 3: 1980
Option 4: 2640
Answer (1)
11th Jan, 2024
Correct Answer: 1320
Solution :
Circumference of a wheel = $2 \pi r$ = $\frac{2 × 22 × 21}{7}$ = 132 cm
Distance travelled in 1 revolution = 132 cm
Distance travelled in 10 revolutions = 10 × 132 = 1320 cm
Hence, the correct answer is 1320.
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