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What is the equation for the Surface Area of a cylinder?
If the cylinder has radius R and length L , the curved part of the surface has area 2piRL and each of the ends has area piR^2. The total surface area is the sum of the curved part plus two ends.
Think of slitting the cylinder down one side, then unroll it and lay it down flat. What you have then is a rectangle. The area of the rectangle is: (length x width). The length of the rectangle used...
The surface area of a cylinder can be derived from the area of rectangle. If you 'unroll' a cylinder you have a shape of a rectangle, similar to a sheet of paper. The width of the rectangle will be...