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9 March, 09:22

Find the surface area of a right cone that has a diameter of 11.2 feet and a height of 9.2 feet. Round your answer to the nearest hundredth.

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  1. 9 March, 11:28
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    S=288ft^2

    Step-by-step explanation:

    d=11.2ft, h=9.2ft

    r=d/2=11.2/2=5.6

    e=√r^2+h^2=√5.6^2+9.2^2

    e=10.77ft

    s=πr^2+πre

    s=π (5.6) ^2+π (5.6) (10.77)

    s=91.67π

    s≈288ft^2
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