find the area swept by the hour hand in 3hours. if the length of hour hand is 2.1 cm
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Answer:
41.54 sq.cm
Step-by-step explanation:
length of hand indicates radius of circle.
we know the formula for area of square.
= π r (square)
=3.14 * 2.1 *2.1
=13.84
it means for 1 hr it swept 13.84 sq.cm area
so for 3 hrs
13.84 *3= 41.54 sq. cm
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