Hemisphere
Hemisphere is half of the sphere. In another word, if a sphere is cut into two symmetrical pieces through the center then it is called a hemisphere. Because it is half of a sphere then the volume and surface area are half of the volume and surface area of a sphere.
Volume of hemisphere = (1/2)(4/3)πr3
Lateral Surface area of Hemisphere = (1/2)(4πr2) = 2πr2
Total Surface Area of Hemisphere = 2πr2 + πr2 = 3πr2
Sphere Formulas
The sphere is a round 3D object. Unlike other 3D shapes, the sphere has no vertices or edges. The distance from the center of the sphere to any point on the surface is the same. In geometry, a sphere is a three-dimensional figure with a round shape. From a mathematical point of view, it is a combination of a set of points connected by common points equidistant in three dimensions. Examples of spheres include basketball, soap bubbles, and tennis balls.