The surface area of the cone is 108π square centimeters
Surface area of a cone
The formula for finding the surface area of a cone is expressed as;
SA= πrl
where
r is the radius = 12/2 = 6cm
L is the slant height = 18cm
Substitute
SA= πrl
SA = 6(18)π
SA = 108π square centimeters
Hence the surface area of the cone is 108π square centimeters
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