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The radius of a wheel is 21 cm. How many revolutions will it make in travelling 924 m (use π = 22/7 )

A7

B11

C200

D700

Answer:

D. 700

Read Explanation:

r= 21 cm Circumference = 2πr! = 2 x 22/7 x 21=132 cm Number of revelutions = 924/132 x 100 = 7 x 100 = 700


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