Q20.A truck has a wheel of radius 14 cm. How many times must it rotate to cover 400m?
Q21. A car has a wheel of radius 7cm. How much distance will it cover if it rotate 500 times?
Q22. The minute hand of a circular clock is 13cm long. How far does the tip of the minute hand move in 1 h?
Q23. The minute hand of a circular clock is 16 cm long. How far does the tip of the minute hand move in 1 h?
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