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7 December, 17:52

A trampoline has an area of 49 pie square feet. What is the diameter of the trampoline?

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  1. 7 December, 21:06
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    We know that formula for the area of the circle is / pi r^2 and this area is equal to 49.

    We can make such equation

    /pi r^2=49

    For simplification we canassume pi=3

    3r^2=49 / : 3 divide both sides by 3

    r^2=16.3 / sqrt{both sides}

    r = / sqrt{16.3}

    r=4.04

    We know that diameter is equal 2 times radius, so diameter=2*4.04=8.08 - its the answer
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