In the surface area formula for cylinders, which expression represents the lateral area?
πrh
2πrh <~my chocie
πr*2
2πr*2
correct
To determine which expression represents the lateral area in the surface area formula for cylinders, we need to understand what the lateral area refers to. The lateral area of a cylinder is the total area of the curved surface, excluding the top and bottom faces.
The surface area formula for a cylinder is given by:
Surface Area = 2πrh + 2πr^2,
Let's break down the components in this formula:
- 2πrh represents the area of the two circular bases of the cylinder.
- 2πr^2 represents the curved part of the cylinder, which consists of the lateral area.
Therefore, the expression that represents the lateral area is 2πrh.