To find the area of a cylinder a simple formula used is
A=2(pi)r2 +2(pi)rh
with;
R being the radius of the circle
and H being the height of the cylinder.
the formula can also be translated as;
2(pi)rX[r+h]
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The area for the base of a cylinder is the area of a circle. pi times radius squared.
You Find the Hieght of the cylinder
First find the area of the cylinder's base, and multiply that by the height. For V = A x h. Volume, Area, height.
We assume the surface area of a cylinder excluding its ends. Area = height of cylinder multiplied by circumference. That is A = h x Pi x diameter.
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