The ball is referred to as the set of all points in space extending from a center at a distance of a certain radius R. the Radius in turn is a segment connecting the center of the ball to any point on its surface. how to find the volume of a sphere. Answers. No Answers. Recent questions. vous aimez manger du glaces au mer? 2 years ago; find the taxi drivers hourly rate is $2 and he charges $19.50 for a 7 mile trip 2 years ago - Easy Spanish Sentences. A sphere (from Greek σφαῖρα —sphaira, globe, ball ) is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a circle circumscribes its disk ). \ Volume of a sphere = 2 x volume of hemisphere (It is noted that the cross-sectional areas of the solids in both figures may change with different heights from the center of the base. However, this does not affect our proof.) In this video, you will learn how to find the volume of a sphere. So for example, you have a sphere with the diameter of 15 cm. And then what? The formula my teacher gave me was 3.14 x r x 2 x h divided by 2/3. ??? Wel where is the height? Gahhh im so confused. I know another way but im not sure. The other way is Radius X 3 X 3.14 X 4 divided by 3., or something like that. :c gahh im so confused. Improve your math knowledge with free questions in Volume of spheres and thousands of other math skills. How to find the volume of a sphere? I asked before and got no response so figured maybe my wording was confusing. I know the formula is 4/3pi r ^3. However I do not understand the formula. For instance why is 4/3 part of formula, or why did we cube the radius. Thanks. Answer Save. 7 Answers. Relevance. The volume enclosed by a sphere is given by the formula Where r is the radius of the sphere. In the figure above, drag the orange dot to change the radius of the sphere and note how the formula is used to calculate the volume. Since the 4, 3 and pi are constants, this simplifies to approximately