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How many times a wheel of radius 28 cm must rotate to 352 m? {Take pie=22/7}
Given:
The radius of a wheel is $28\ cm$.
To do:
We have to find the number of times the wheel must rotate to cover 352 m.
Solution:
Circumference of a circle of radius $r=2 \pi r$
Distance covered in 1 revolution $=2 \times \frac{22}{7} \times 28$
$=2 \times 22 \times 4$
$= 44 \times 4$
$= 176\ m$
Number of revolutions taken by the wheel to cover 352 m $=\frac{352}{176}$
$=2$
Hence, the wheel must rotate 2 times to cover 352 m.
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