A sector of a circle has an area which is 1/5 of the
area of the entire circle. What is the angle of the
arc?
C) 90°
A) 180°
D) 72°
B) 150°
E) 36°
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180 the answer is coming from jammu
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Area of a sector
In a circle with radius r and centre at O, let ∠POQ = θ (in degrees) be the angle of the sector. Then, the area of a sector of circle formula is calculated using the unitary method. Now the area of the sector for the above figure can be calculated as (1/8) (3.14×r×r).
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