Question

How many hemispheres can be obtained from a given sphere

Answer 1

Answer:

Hemisphere

A hemisphere is the half of a sphere. When a sphere is cut into two halves, then the shape we get is called the hemisphere. A hemisphere has a curved surface and a flat base. The curved surface area of the hemisphere is half of the surface area of the sphere. Therefore,

The Curved Surface Area of Hemisphere =1/2 × 4 × πr2

Curved surface area of a hemisphere = 2πr2. Since a sphere is a combination of a curved surface and a flat base, to find the total surface area we need to sum up both the areas. The flat base being a plane circle has an area πr2. Total surface area of a hemisphere is 2πr2+πr2. So,

The Total surface area of Hemisphere = 3πr2

Step-by-step explanation:

Answer 2

Two Hemisphere Because Hemisphere is half of the sphere Two hemisphere forms a sphere