Cone area and side

Calculate the surface area and volume of a rotating cone with a height of 1.25 dm and 17,8dm side.

Correct answer:

S =  1983.3983 dm2
V =  412.6973 l

Step-by-step explanation:

h=1.25 s=17.8 r=s2h2=17.821.25217.7561 S1=π r2=3.1416 17.75612990.4735 S=S1+π r s=990.4735+3.1416 17.7561 17.8=1983.3983 dm2
V=S1 h/3=990.4735 1.25/3=412.6973 l

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