The minute hand of this clock is 7 cm long. How far does its tip travel along the dashed path in the next 20 minutes? (Take \π = 227.)

Question

Accepted Answer

14 2/3 cm. In 60 minutes the tip goes once round a circle of radius 7 cm: 2× 227×7=44 cm. In 20 minutes it covers 2060 of that: 443=14 23 cm. (44 cm is a full hour; 29 13 cm is 40 minutes.)

The minute hand of this clock is 7 cm long. How far does its tip travel along the dashed path in the next 20 minutes? (Take $π = \frac{22}{7} .$ )

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The minute hand of this clock is 7 cm long. How far does its tip travel along the dashed path in the next 20 minutes? (Take π=722​.)

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Master this topic in 30 minutes a day.

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The minute hand of this clock is 7 cm long. How far does its tip travel along the dashed path in the next 20 minutes? (Take $π = \frac{22}{7} .$ )