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Mathematics 7 Online
OpenStudy (pleasehelp2346788):

Find the surface area of the cylinder. Give your answer in terms of pi. (I got 452.39 but it needs to be in terms of pi and not in a decimal)

OpenStudy (pleasehelp2346788):

OpenStudy (pleasehelp2346788):

@Mehek14

Mehek (mehek14):

\[2 \pi rh + 2 \pi r^2\]

OpenStudy (pleasehelp2346788):

substitute r with 6?

Mehek (mehek14):

No, 6 is the diameter so radius is 6/2 = 3 Put 3

OpenStudy (pleasehelp2346788):

ok 2 * 3 * 6 + 2 * 6?

Mehek (mehek14):

\[2*3*6+2*3^2\]

OpenStudy (pleasehelp2346788):

That = 54

OpenStudy (pleasehelp2346788):

So 54pi?

Mehek (mehek14):

Yes

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