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24 February, 20:03

The formula for the slant height of a cone is t equals StartFraction S minus pi r squared Over pi EndFraction., where S is surface area of the cone. Use the formula to find the slant height, l, of a cone with a surface area of 500π ft2 and a radius of 15 ft.

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  1. 24 February, 23:00
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    275 ft

    Step-by-step explanation:

    The formula given to use for the slant height l of the cone is;

    l = (s - πr^2) / π

    Now substituting the parameters given in the question, 500 π for area and radius of 15, we have

    l = {500π-15^ (2) π}/π

    l = (500 π - 225 π) / π

    l = 275 π/π

    l = 275 ft
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