1.

The minute hand of a circular clock is 15 cm long. How far does the tip of the minute hand move in 1 hour? [Use π = 22/7] 

Answer»

In 1 hour, minute hand completes one round means makes a circle. Radius of the circle (r ) = 15 cm

Circumference of circular clock = 2πr

= 2 x 3.14 x 15 = 94.2 cm

Therefore, the tip of the minute hand moves 94.2 cm in 1 hour.



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