Advertisements
Advertisements
प्रश्न
The minute hand of a clock is 10cm long. Find the area of the face of the clock described by the minute hand between 9 A.M. and 9.35 A.M.
बेरीज
उत्तर
We have,
Angle described by the minute hand in one minute = 6º
∴ Angle described by the minute hand in
35 minutes = (6 × 35)º = 210º
∴ Area swept by the minute hand in 35 minutes
= Area of a sector of angle 210º in a circle of radius 10 cm
`={ \frac{210}{360}\times \frac{22}{7}\times (10)^{2}}`
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
