the minute hand of a clock is 10 centimetre long find the area of the face of the clock described by the minute hand between 9:00 a.m. and 9:35 a.m.
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Step-by-step explanation:
Radius of the clock = 10CM
As we know, the angle made at the centre by a minute hand, in 1 hr (60 minutes) = 360°
Therefore Angle made in 1 minute = 360/60 = 6°
Similarly, angle made in 35 minutes = 6×35 = 210°
Thus, by applying the formula of area of a Sector = πr^2Theta/360
Where Theta = 210°.
22/7×10×10×1/360 = 183.25 square centimetres....ans.
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