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26 July, 20:34

A cone has base radius 3cm, perpendicular height 4cm and slant height 5cm.

5 cm

3 cm

Work out the surface area of the cone.

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Answers (1)
  1. 26 July, 20:55
    0
    The lateral area of a cone equals

    PI * radius * slant height

    =PI * 3 * 5

    lateral area = 47.1238898038 square centimeters
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