the length of minute hand of a clock is 5 cm. find the area of swept by the minute hand during that time period 7 p.m. to 7:45 a.m.??
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the answer is 58.875cm sq
TheLegendKsqure:
plzz solve
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2
The time gap is 40 minutes.
In 60 minutes minute hand moves through 360 degrees.
In 40 minutes minute hand moves through 360/60 * 40 = 240.
The area swept = 240/360 * pi * r * r
= 240/360 * 22/7 * 5 * 5
= 1100/21
In 60 minutes minute hand moves through 360 degrees.
In 40 minutes minute hand moves through 360/60 * 40 = 240.
The area swept = 240/360 * pi * r * r
= 240/360 * 22/7 * 5 * 5
= 1100/21
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