COCO
230
AREAS
EXERCISE 12.2
10.
Unless stated otherwise, use t =
22
7
1. Find the area of a sector of a circle with radius 6 cm if angle of the sector is 60°
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We know that the area of a sector having radius r and angle \Theta is given by:-
Area\ =\ \frac{\Theta}{360^{\circ}}\times \pi r^2
Thus the area of the given sector is:-
\\=\ \frac{60^{\circ}}{360^{\circ}}\times \pi \times 6^2\\\\=\ \frac{132}{7}\ cm^2
I hope it's your help.,..
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