Question

The length of minute hand of a clock is 14 cm. The area swept by the minute hand in one minute is...

Answer 1

Step-by-step explanation:

We have the area swept by the minute hand of the clock in 60 minutes =πr2=227(14)2=616 square centimetres. Hence the area swept by the minute hand clock in 1 min =61660 square centimetres.

Answer 2

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The length of minute hand of a clock is 14 cm. The area swept by the minute hand in one minute is what?

$\huge✍︎\fbox\orange{ÂŇ}\fbox{SW} \fbox\green{ÊŘ}:$

$We \: know \: that, \: angle \: covered \: in$

$1 \: minute \: by \: minute \: hand$

${=\frac{360°}{60} = 6°}$

${Hence, required \: area: }$

$= \pi {r}^{2} \times \frac{∅}{360°} = \frac{22}{7} \times 14 \times 14 \times \frac{6}{360}$

$= 10.26 \: {cm}^{2}$

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