2 x pi x radius x height + 2 x pi x radius square
btw, my teacher taught me this
^^^Well, you teacher taught you wrong.. cause i did this on my math test last week and it was wrong.. and I still don't know how to do it. Yay.
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you divide the surface area by the circumference.
if the cylinder is on the inside, it would not affect the surface area. otherwise, subtract the part of the inside cylinder that touches the outside from the cylinder
Surface Area: 2πr2 + 2πrh Volume: πr2h
Entire surface area of a cylinder = (2*pi*radius2)+(diameter*pi*height)
Entire surface area = (2piradius2)+(pidiameterheight) in square units