The conical

The conical candle has a base diameter of 20 cm and a side of 30 cm. How much dm ^ 3 of wax was needed to make it?

Correct result:

V =  2.9619 dm3


D=20 cm s=30 cm  r=D/2=20/2=10 cm h=s2r2=302102=20 2 cm28.2843 cm  V1=13 π r2 h=13 3.1416 102 28.28432961.922 cm3  V=V1 dm3=V1/1000  dm3=2961.922/1000  dm3=2.962 dm3=2.9619 dm3

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