the minute hand of a clock is 10 cm long find the area of the face of the described by the minute hand between 10:20 a.m. to 10:35 a.m.
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Ans: Angle described by minute hand in 60 minutes = 360*
Angle described by minute hand in 15 minutes = 360/60×15 = 90*
theta 90 degree and r = 10
Area swept by minute hand in 15 minutes =
pi r^2 theta/360* = 22/7×10×10×90/360
=> 78.6 cm^2
Hope it helps...!!
Angle described by minute hand in 15 minutes = 360/60×15 = 90*
theta 90 degree and r = 10
Area swept by minute hand in 15 minutes =
pi r^2 theta/360* = 22/7×10×10×90/360
=> 78.6 cm^2
Hope it helps...!!
abcd1221:
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