A semi-circular rug has a diameter 10½ cm. Find it's area in cm2 . [π =22/7]
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Answer:
Area of semi circle = πr² / 2
Diameter = 10. 5 cm
Radius = 5.25 cm [10.5 /2 ]
Area = 22/7 × 5.25 × 5.25 / 2
= 43.27 cm²
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