emily147 emily147

07-02-2016
Mathematics

contestada

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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Panoyin Panoyin

08-02-2016

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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