SOLUTION: Find the surface area of the figure. Round to the nearest tenth of a unit, if necessary. The cylinder has a radius of 3 and a height of 8. Please explain how you got the answer

Algebra ->  Volume -> SOLUTION: Find the surface area of the figure. Round to the nearest tenth of a unit, if necessary. The cylinder has a radius of 3 and a height of 8. Please explain how you got the answer      Log On


   

Question 120533: Find the surface area of the figure. Round to the nearest tenth of a unit, if necessary.
The cylinder has a radius of 3 and a height of 8.
Please explain how you got the answer. Thankyou
Answer by tutor_paul(519) About Me  (Show Source):
You can put this solution on YOUR website!
Formula for the surface area of a cylinder is:
A=2%28pi%29r%5E2%2B2%28pi%29rh
You are given r and h, so just plug and chug:
A=2%28pi%29%283%5E2%29%2B2%28pi%29%283%29%288%29
Simplifying:
A=2%28pi%29%289%29%2B2%28pi%29%2824%29
A=18%28pi%29%2B48%28pi%29
A=66%28pi%29
You can plug that into your calculator to get a numerical answer. Don't forget to round it off.
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Good Luck,
tutor_paul@yahoo.com