Surface Area of Hemisphere
Curved Surface Area of Hemisphere:
A hemisphere is half of a sphere, this must mean that the curved surface area of a hemisphere is the surface area of a sphere divide by 2. That is; 4πr²/2 which gives the following expression.
The formula above does not take into account the entire surface area covered by the hemisphere because it does not account for the circular base below on the hemisphere. The formula below finds the total surface area.
Total Surface Area of Hemisphere
If you’re to take into account the circular base below the curve, you will need to use the formula below. The surface area would be a combination of the curve area and the area of the circle. You must know that the area of the circle is πr². This means the total surface area is 2πr² + πr².