Calculate 65804

Calculate the surface and volume of a rotating cone, the base of which has a diameter of 6 cm and its height of 4 cm.

Correct answer:

S =  75.3982 cm2
V =  37.6991 cm3

Step-by-step explanation:

D=6 cm h=4 cm  r=D/2=6/2=3 cm h2 = s2r2  s=h2+r2=42+32=5 cm  S1=π r2=3.1416 3228.2743 cm2 S2=π r s=3.1416 3 547.1239  S=S1+S2=28.2743+47.1239=75.3982 cm2
V=31 S1 h=31 28.2743 4=37.6991 cm3

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