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27 July, 19:08

A cone has a base radius of 5cm and a vertical height of 12cm. Calculate the total surface area of the cone.

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  1. 27 July, 19:21
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    S = πr² + πrl

    S = 3.14 (5) ² + 3.14 (5) (12)

    S = 3.14 (25) + 3.14 (60)

    S = 78.5 + 188.4

    S = 266.9 cm²
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