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:

V=250 dm3  h = 2 π r V = π r2 h = π r2   2 π r =  2   π2 r3  r=32π2V=32 3.141622502.331 dm h=2π r=2 3.1416 2.33114.6459 dm S=2π r2+2π r h=2 3.1416 2.3312+2 3.1416 2.331 14.6459=248.64 dm2

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