Question

the length of minute hand of a clock is 14cm . find the area swept in 10 minutes

Answer 1

Answer:

$60 \: minutes \: is \: for \: πr^2 \\ \\ </p><p>1 \: minute \: for \: πr^2/60 \\ \\ 10 \: minutes \: for \: \frac{\pi {r}^{2} }{60} \times 10 = \frac{\pi {r}^{2} }{6} \\ \\ \implies \frac{\pi \times {14}^{2} }{6} = \frac{22 \times 14 \times 14}{7 \times 6} \\ = 102.67 \: {cm}^{2}$