The diameter of a wheel is 63 cm. Distance traveled by the wheel in 100 revolutions is ----

A 99 meters
B 198 meters
C 63 meters
D 136 meters

Correct Answer: 198 meters

Radius of the wheel, R = 63/2 cm = 31.5 cm Distance travelled in one revolution = 2 π R = 2 π x (31.5) = 63 π  cm = 0.63 π meters  So, distance travelled in 100 revolutions = 100 x 0.63 π  = 63 x 3.1416 =  198 meters  
Bissoy MCQ
#গণিত #Standard Bank Ltd #Standard Bank Ltd - Probationary Officer - 09.05.2008

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