Question

the minute hand of a clock is 10 cm long find the area of the face of the clock described by the minute between 10:20 AM to 10:30AM

Answer 1

$area = \frac{\pi {r }^{2} \: \times angle }{360} \\ = 3.14 \times 10 \times 10 \times 60 \div 360 \\ \\ = \frac{314}{6} {cm}^{2}$