Volume of the cone

Find the volume of the cone with the base radius r and the height v.
a) r = 6 cm, v = 8 cm
b) r = 0,9 m, v = 2,3 m
c) r = 1,4 dm, v = 30 dm

Correct answer:

V1 =  301.5929 cm3
V2 =  1.9509 m3
V3 =  61.5752 dm3

Step-by-step explanation:

r1=6 cm v1=8 cm  V1=31 π r12 v1=31 3.1416 62 8=301.5929 cm3
r2=0.9 m v2=2.3 m  V2=31 π r22 v2=31 3.1416 0.92 2.3=1.9509 m3
r3=1.4 dm v3=30 dm  V3=31 π r32 v3=31 3.1416 1.42 30=61.5752 dm3

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