The length of the minute hand of a clock is 12 cm. Then the area swept by the minute hand in one minute will be
A. 22·12 cm2
B. 23·10 cm2
C. 24·12 cm2
D. None of the above
Answer:D
The length of the minute hand of a clock is 12 cm. Then the area swept by the minute hand in one minute will be
A. 22·12 cm2 B. 23·10 cm2 C. 24·12 cm2 D. None of the above