SOLUTION: What is the surface area of a cylinder 120mm high, with a diameter of 68mm? and how do you work it out?

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Question 338742: What is the surface area of a cylinder 120mm high, with a diameter of 68mm?
and how do you work it out?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The area of the top and bottom circular portion of the cylinder is,
Ac=pi%2AR%5E2
The area of the body is calculated using the radius and the height,as if you were cutting it lengthwise and unrolling it into a rectangle.
Ab=%282%2Api%2AR%29%2AH%0D%0APutting+it+all+together%2C%0D%0A%7B%7B%7BA=2Ac%2BAb
A=2%2Api%2AR%5E2%2B2%2Api%2ARH
A=2%2Api%2A%28R%5E2%2BRH%29
A=2%2Api%2A%28D%5E2%2F4%2B%28DH%29%2F2%29
A=pi%2A%28D%5E2%2F2%2BDH%29
A=pi%2A%2868%5E2%2F2%2B68%2A120%29
A=10472%2Apimm%5E2