Question

The length of the minute hand of a clock is 14 cm. Find the area in ${cm}^2$ swept by the minute hand in 30 minutes.

• A. 51.3
• B. 55.1
• C. 60.2
• D. 70.8

Answer 1

The correct option is A

51.3

30 minutes corresponds to ${180}^{\circ }$.

Radius = 14 cm.

Area = $\frac{180}{360}$ × $\frac{22}{7}$× ${14}^2$ = 308 ${cm}^2$.