Clocks and Calendars Practice Test 1 with solutions

Question : 12 of 40

Marks: +1, -0

The length of a minute hand of a clock is 7 cm. The area swept by the minute hand in 30 minutes is:

Solution:

Length of the minute hand of clock = 7 cm
Area swept by the minute hand in 30 minutes
=

{πr^2}/2

{22}/7×7/2 × 7

= 77 sq. cm.

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