Question

A bicycle wheel has a diameter of 7 cm. What distance does the wheel cover on the ground if it completes 1 full rotation?
(Assume $\pi =\frac{22}{7}$)

• A. 44 cm
• B. 42 cm
• C. 22 cm
• D. 21 cm

Answer 1

The correct option is C 22 cm

Given, diameter = 7cm
1 complete rotation = circumference of the wheel = $2\pi r$
As, we know diameter $=2\times r=7$
So, Distance covered$=\frac{22}{7}\times 7=22cm$