find the area of the sector whose radius is 7 cm and central angle his 180°
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Answer:
77 cm^2
Step-by-step explanation:
- radius of sector (r) = 7cm
- angle of sector (x) = 180°
- area of sector = x÷360°× pi r^2
- = 180÷ 360× 22÷7×7×7
- = 77 cm^2
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1
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