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C2

A solid cylinder has a volume of 16π cm3.
a. Express its height h in terms of its radius r.
b. Write down an expression for the total surface area A of the cylinder, in terms of r and h.

I did part a and I got h=16r2h=\frac{16}{r^2}

But in part b I am confused.
area=2πr2 + 2πr(16/r2)
area=2πr2+ 32π\r

now what?
thanks
Not sure what the problem is here, everything you've done is correct
Reply 2
Avatar for krisshP
krisshP
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Bump
Original post by krisshP
Bump


r^2=16/h


so sub that back in.
Reply 4
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GeneralOJB
Original post by dan94adibi
r^2=16/h


so sub that back in.


:ahee:
Reply 5
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krisshP
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14
Original post by dan94adibi
r^2=16/h


so sub that back in.

Thanks. I'll try tat now.
Reply 6
Avatar for krisshP
krisshP
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14
Original post by dan94adibi
r^2=16/h


so sub that back in.


Thanks, it worked :smile:
Original post by krisshP
Thanks, it worked :smile:


You're welcome. :wink:

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