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22 August, 03:38

A right cone has a base diameter that is 12cm and a slant height that is 45cm what is the surface area

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  1. 22 August, 03:57
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    Given:

    Base diameter = 12 cm, so base radius is r = 6 cm.

    Slant height, L = 45 cm

    The surface area is given by the formula

    A = πr² + πrL

    Therefore

    A = π*6² + π*6*45

    = 306π cm²

    = 961.3 cm² (nearest tenth)

    Answer: 306π cm² or 961.3 cm² (nearest tenth)
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