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Mathematics 8 Online
OpenStudy (anonymous):

Please help me find the surface area of the cylinder in terms of pi. I am really confused.

OpenStudy (anonymous):

OpenStudy (anonymous):

Use the equation: A=2πrh+2πr^2

OpenStudy (anonymous):

I did and I got s=2TTr(14)^2+2TT(14)(10.4) but I don't know where to go from there. 2*pie*radius*14 doesn't really make sense when I do it

OpenStudy (anonymous):

I got 1002.288 which isn't one of the options

OpenStudy (anonymous):

How did you manage that... I got 2146.34

OpenStudy (anonymous):

I just did 2 times 3.14 which is 6.28 times 14 time 10.4 and then did 2 times 3.14 times two again, idk Im really bad at math

OpenStudy (anonymous):

.... yeah... follow order of operations.

OpenStudy (anonymous):

oh yeah I always forget that thanks

OpenStudy (anonymous):

how do I put it in terms of pi then to get the answer?

OpenStudy (anonymous):

243.6π m2 145.6π m2 170.8π m2 194.6π m2 these are the options

OpenStudy (anonymous):

The equation is already given to find A. All you have to do is plug in for the variables. A=2π14(10.4)+2π14^2

OpenStudy (anonymous):

OHHH in terms of pi.

OpenStudy (anonymous):

yea

OpenStudy (anonymous):

Same general order, just simply solve in terms of pie. Ended up with A.

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