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The minute hand of a clock is 20 cm long. Find the area on the face of the clock swept by the minute hand between 8 a.m. and 8:45 a.m.
Answer & Solution
Correct Answer:
Option
A
$$\eqalign{
& {\text{Area}} = \frac{{270}}{{360}}\pi {r^2} \cr
& = \frac{3}{4} \times \frac{{22}}{7} \times 20 \times 20 \cr
& = \frac{{6600}}{7}\,{\text{c}}{{\text{m}}^2} \cr} $$
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