BPSC 53-55th Exam Prelims 17 Apr 2011 Solved Paper

Question : 75 of 150

Marks: +1, -0

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

Solution:

r=12 {cm}

Now angle made by the minute hand in one minute

=\;{360^{∘}}/{60}=6^{∘}

Area

=\;{π r^{2} θ}/{360}

=\;{22}/{7} × \;{12^{2} × 6}/{360}

=7.54 {cm}^{2}

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