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Mr Townes created a 2foot wide garden path around a circular garden. The radius of the garden is 7 feet. He wants to cover the path in stones. If mr. Townes needs 1 bag of stones for every 5 square feet of path, how many bags of stones will he need to cover his garden path?

  • Math -

    area path= area outer-area inner
    = PI (9^2 - 7^2)= PI*(81-49) figure that out.

    Now, bags of stones=1bag/5 * area

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