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Mathematics 21 Online
OpenStudy (anonymous):

how do you find surface area of a cylinder??

OpenStudy (anonymous):

think about doing the surface area of the outside, plus the surface area of the top and bottom

OpenStudy (anonymous):

so, the area of a circle is \[2\pi r^2\]

OpenStudy (anonymous):

2??

OpenStudy (anonymous):

sorry, thats for both ends

OpenStudy (anonymous):

oh because theres 2 circles oh ok

OpenStudy (anonymous):

then the circumference of a circle is \[2\pi r\] and you will multiply that by the height to get the surface area of the rest of the cylinder.

OpenStudy (anonymous):

ok cool thanks for your help I will fan you

OpenStudy (anonymous):

no problemo. and remember that you have to add the areas. area of ends + area of rest of cylinder.

OpenStudy (anonymous):

yup..

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