How to find Sphere Volume

A sphere is a round type of shape in three dimensions, it looks like a circle but it is very different from circle, like circle it also has radius and diameter. If we write the equation for circle then it would be x2 + y2 =a2. Here a is the radius of circle, as circle is a two dimensional shape so we have taken x and y and when we talk about sphere as we know well now that sphere is a three dimensional body so it will have three parameters x, y and z, so if we are asked to write the equation then it will be x2 + y2 +z2 =a2. Now as our topic is sphere volume for finding that we need to have good knowledge of radius of sphere, the formula for the radius of circle is given below,

V = 4/3π r3

Here π  is a constant whose  value will be 22/7 and 4/3 is also a constant , if we see here then volume of the sphere is totally depend on radius as the radius increases volume will increase and as the radius decreases  it will decrease. If we see a problem in which we are asked to calculate the volume of a sphere and radius is given as seven so we can calculate the volume as

V = 4/3πr3

V = 4/3 *22/7 *7*7

Seven will cancel out with seven and we remain with

V = 4/3 *22*49

V = 1437.33

We can also derive one more formula if we will calculate the value of 4/3π, so the value of this will be 4.19 so new formula for the volume will be 4.19 r3. We can also calculate the volume by this formula as well

For finding the cube of any number you can use cube root calculator and cube roots are important for Tamilnadu education board

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