Surface 64744

The cone is 12 cm high, and the radius of the figure is 9 cm. Find out its surface.

Correct answer:

S =  678.584 cm

Step-by-step explanation:

h=12 cm r=9 cm  s=h2+r2=122+92=15 cm  S=π r2+π r s=3.1416 92+3.1416 9 15=678.584 cm

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