The volume

The volume of the cone is 94.2 dm³, the radius of the base is 6 dm. Calculate the surface of the cone.

Correct answer:

S =  235.6103 dm2

Step-by-step explanation:

V=94.2 dm3 r=6 dm  S1=π r2=3.1416 62113.0973 dm2  V=3S1 h  h=3 V/S1=3 94.2/113.09732.4987 dm  s=h2+r2=2.49872+626.4995 dm  S2=π r s=3.1416 6 6.4995122.5129 dm2  S=S1+S2=113.0973+122.5129=235.6103 dm2

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