A sphere with a diameter of 16mm has the same surface area as the total surface area of a right cylinder with the base diameter equal to the sphere diameter. How high is the cylinder? A. 16 mm B. 8 mm

asked May 15, 2018 15.3k views

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The answer is 8mm and here's how:

4πsquare= 2πrsquare+2πrh
2πsquare=2πrah
R=h
So h=16/2=8mm

Nico Shultz answered May 19, 2018

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