The total surface area of a Cylinder can be associated to this sentence", How much paint do i need to cover the surface?".

Use the slider to unfold the Cylinder.

Let h be the height of the cylinder and r be radius of the circular top and base of the cylinder

1. How do you get the (a) area of a rectangle, (b) area of a circle and ,(c) circumference of a circle?[br]2. In the given net of the cylinder, what is the relationship between the length of the rectangle and the circumference of the circle?[br]3. What is the area of the green rectangle in terms of [math]\pi[/math]?[br]4. What is the formula for the total surface area of the cylinder

Bhusal, B. (2020, July 28). 3D Net of Cylinder Using Geogebra. Youtube. https://www.youtube.com/watch?v=31fV5wZxJjg&t=1s