how can i find the lateral of cylinder

Question

how can i find the lateral  of cylinder

mathmale · Answer

Imagine that the cylinder is a can, and that you remove both ends.  Cut the resulting cylinder once, lengthwise.  The result, when flattened out, is just a rectangle whose length is the circumference of the cylinder and whose width is the height of the cylinder.

The equation for Circumference is   C=2 pi r (r being the radius)

What is the area of that rectangular piece?

Find the area of the top or bottom.  Formula:  A = pi r^2.

mathmale · Answer

Please choose an example and get started calculating the total surface area of the cylinder.

mrnood · Answer

@mathmale 
I think 'lateral area' normally only includes the rectangle - not the ends

Generally caaled 'surface area' if it includes all faces

Maybe wrong on this tho'.....

mathmale · Answer

Fine:  Find and label the lateral area as such.
          Find and label the total surface area.

mathmale · Answer

Eventually you'll have to be able to do both.