BY Team Aakash Byju's
Step-By-Step Guide to Find Surface Area of a Hemisphere in 3 Minutes
Let's start with learning what is hemisphere and how it can be formed.
Click Here To Attend Free Trail Class
Download Aakash APP
It is a 3-dimensional geometric shape that is half of a sphere. It has one circular flat surface and a curved surface.
The surface area of a 3-dimensional object is the measure of the area of all its faces.
So, the surface area of a hemisphere is the area of a flat circular face plus the area of a curved face.
We know that the total surface area of a sphere is 4π :
2
where r is the radius of the sphere.
Since , the hemisphere is half of a sphere, the curved surface area of the hemisphere would be half of the surface area of the sphere.
Since we know that the flat face of the hemisphere is a circular face
Hence the surface area of a hemisphere is:
Hope you found the notes helpful. Share them with your friends.