Rotary cylinder 2

The base circumference of the rotary cylinder has the same length as its height. What is the surface area of the cylinder if its volume is 250 dm3?

Correct answer:

S =  248.64 dm2

Step-by-step explanation:

h=2πr V=πr2h=πr22πr=2pi2r3=250 r=32π2V=2.33 dm h=2πr=14.65 dm  S=2πr2+2πrh=248.64 dm2

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