Rotating cone

The rotating cone has a base diameter of 18 dm and a height of 12 dm. Calculate the volume V.

Correct result:

V =  1017.876 dm3

Solution:

D=18 dm h=12 dm  r=D/2=18/2=9 dm S=π⋅ r2=3.1416⋅ 92≐254.469 dm2  V=13⋅ S⋅ h=13⋅ 254.469⋅ 12=1017.876 dm3

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