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24-04-2018
Mathematics

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A sector of a circle has a central angle of 45 ∘ . find the area of the sector if the radius of the circle is 5 cm.

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Аноним Аноним

24-04-2018

Area of the whole circle = πr² = π(5)² = 25π

Area of the sector = 45/360 x 25π = 9.82 cm²

Answer: 9.82 cm²

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