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16 July, 06:04

A right pyramid has a total area of 258 cm squared. A right cone has a radius of 4 cm. The total areas of the cone and pyramid are equal. What is the height of the cone, rounded to the closest tenth of a cm?

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  1. 16 July, 08:44
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    I am assuming you meant "volume" instead of "area"

    Volume of a Cone = (1/3) (height) (pi) (radius) ^2

    so you can get the equation

    258 = (1/3) (pi) (4) ^2 * (height)

    (height) = (258*3) / (16pi) = 15.4
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