Curved surface area of a hemisphere 1 side external only. 2 x 31416 x 5³ 3 in³. Use the circumference formula C2pr and rearrange it to solve for the radius rC2p.
By the way if you take calculus later you will be able to derive this formula in another way by finding an integral.
So the formula to find the volume-hemisphere is. The values can be entered for different units of measurement. Volume of allow sphere Solid Sphere. V 23 p r³ Base surface area of a hemisphere.