Question

The length of a minuto hand of a circular djal is 10 cm. Find the area of the sector formed by the present position and tho position after diva minute of the minute hand. (????= 3.14)

Answer 1

for 60 minute rotation is $2\pi$

So, for one minute rotation will be $\frac{\pi}{60}$

Area of circular arc(s) = 0.5\beta a^{2}

where a is radius = 10 cm and \beta = \pi /60

hence, s = 2.62 cm^{2}

Area of the circular sector formed by minute hand =s = 2.62 cm^{2}