question_answer

How many times the wheel of radius 28 cm must rotate to go 352 m? (Take\[\pi =\frac{22}{7}\]).

Answer:

Distance covered by the wheel in one revolution \[2\pi r=\left( 2\times \frac{22}{7}\times 28 \right)cm\] = 176 cm                Number of revolutions taken to cover 352 m \[=\frac{352\times 100}{176}=200\]