Alg

Solve by completing the square: A rectangular patio has a length of x + 6 m, a width of x + 8 m, and a total area of 400 m². Find the dimensions to the nearest tenth.

Find the radius of a circular lid with an area of 12in.².

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  1. (x+6)(x+8)=400
    x^2+14x+48=400
    x^2+14x+49=401
    (x+7)^2 = 401
    x+7 = ±√401
    x = -7±√401

    πr^2 = 12
    r^2 = 12/π
    r = √(12/π)

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  2. Thank you SO MUCH anonymous

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