a part of uniform width 3 metre runs around a circular Park of radius 9 metre find the area of the path
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Answer: 189 m²
Explanation:
Radius of the park including the path = 9 + 3 = 12 m
Area of the path = Area of park including path - Area of park
= π×12² - π×9² = π(12+9)(12-9) = 22×21×3/7 = 21×3×3 = 189 m²
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