Find the difference of the areas of a sector of angle 120° and its corresponding major sector of a circle of radius 21 cm.

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asked Jun 16, 2019 21.6k views

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Arbie Samong · Answer 1 · 2019-06-20T04:09:57+0000

As given angle of one sector = 120°
So,angle of other sector = 360° - 120° = 240°
So,difference of areas of two sectors of angles 240° and 120° is :

(240)/(360) * (22)/(7) * 21 * 21 - (120)/(360) * (22)/(7) * 21 * 21

(240)/(360) * (22)/(7) * 21 * 21 - (120)/(360) * (22)/(7) * 21 * 21

$= 924 - 462 = 462 \: m {}^(2)$

Find the difference of the areas of a sector of angle 120° and its corresponding major sector of a circle of radius 21 cm.

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