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13 June, 04:43

What is the slant height of a cone with a surface area that measures 435.675 inches squared and a radius that measures 7.5 inches?

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  1. 13 June, 06:00
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    Surface area of a cone: the lateral area + the area of the bottom

    lateral area: pi*r*l, l is the slant height

    area of the bottom: pi*r^2

    pi*7.5l+pi (7.5) ^2=435.675

    23.55l+176.625=435.675

    l=11
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