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    Question

    A circular garden has radius 21 m. A path 7 m wide is

    built outside it all around. What is the area of the path?
    A 1652 sq m Correct Answer Incorrect Answer
    B 1250 sq m Correct Answer Incorrect Answer
    C 1078 sq m Correct Answer Incorrect Answer
    D 1350 sq m Correct Answer Incorrect Answer

    Solution

    Outer radius = 21 + 7 = 28 m Area of path = pi(R^2 - r^2) = 22/7 (28^2 - 21^2) = 22/7 (784 - 441) = 22/7 x 343 = 22 x 49 = 1078 sq m

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