The minute hand of a wall clock is 7 cm longthe area covered by it in – InterviewSolution

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1.

The minute hand of a wall clock is 7 cm longthe area covered by it in 30 minute.

Answer»

Area = πr^2/2 = 22/7×7×7×1/2 = 11×7 =77 sq cm

60minute = 360°1 minute = 360/6030 minute= 360×30/60=180°area of sector= πr2× 180/360 = 22×7×7/7×1/2 = 77 sq cm

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