Question

# The number of revolutions made by a wheel of diameter $$56\ cm$$ in covering a distance of $$1.1\ km$$ is $$\left (Use \pi = \dfrac {22}{7}\right )$$

A
31.25
B
56.25
C
625
D
62.5

Solution

## The correct option is C $$625$$Diameter $$=56\ cm$$Radius $$= 28\ cm$$ (half of diameter) $$1.1\ km = 1,10,000\ cm$$ Then, total distance covered in one revolution $$=2 \pi r = 2\times \dfrac{22}{7}\times 28cm = 176cm$$ Hence, total no. of revolutions $$= \dfrac{110000}{176} = 625$$Mathematics

Suggest Corrections

0

Similar questions
View More

People also searched for
View More