Rotating 6245

How does the volume of the rotating cone change if:

a) double the radius of the base
b) We reduce the height three times
c) Reduce the radius of the base five times

Correct answer:

k1 =  4
k2 =  0.3333
k3 =  0.04

Step-by-step explanation:

 V = π r2 h /3 V1 = π (2r)2 h / 3 k1 = V1/V k1=22=4
V2 = π r2 (h/3) /3 k2 = V2/V k2=1/3=0.3333
V3 = π (r/5)2 h / 3 k3 = V3/V k3=(1/5)2=0.04

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