A problem by Gourav Kushwaha

Level pending

Find the volume of a circular cylinder of height 4 cm whose total surface area is 484 sq.cm


The answer is 616.

Gourav Kushwaha by Gourav Kushwaha , 30, India

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2 solutions

Gourav Kushwaha
Mar 20, 2014

We are told the total surface area of this cylinder is 484. Set up the equality.

(2pir^2) + (2pir*h)=484 ( the two circles and body of cylinder)

Solve for r= 7.0017

Volume = pir^2h= 616.05

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616 is correct

Anil Shinde - 7 years, 2 months ago

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You are right but can u explain

Gourav Kushwaha - 7 years, 2 months ago
Venture Hi
Mar 18, 2014

We are told the total surface area of this cylinder is 484. Set up the equality.

(2 pi r^2) + (2 pi r*h)=484 ( the two circles and body of cylinder)

Solve for r= 7.0017

Volume = pi r^2 h= 616.05

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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