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The minute hand of a watch is 1.5 cm long. How far does its tip move in 40 minutes? (Use π = 3.14) |
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Answer» 60 minutes = 360 degrees. 1 minutes = 6 degrees. 40 minutes = 240 degrees 240° = 240 × \(\frac{\pi}{180} = \frac{4 \pi}{3}\) The required distance travelled = l = rθ 1.5 x \(\frac{4 \pi}{3} = 2 x 3.14 = 6.28 cm\) |
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