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The diagram below represent a solid made up of a hemisphere mounted on a cone. The common radius is 6 cm and the height of the solid is 15cm.
MathF4OPP1Q13
Calculate the external surface of the solid 

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2 x 3.142 x 36 = 226.224
3.142 x 610.82 = 204.0
Total = 430.224cm
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