www.VirtualNerd.com

How Do You Find the Volume of a Sphere?

Find the volume of the sphere.

Summary

  1. 'V' stands for the volume of the sphere
  2. r is a variable standing for the radius, which is 8 inches
  3. π, or pi, is an irrational number we can approximate as 3.14
  4. Since we have a volume, the units are in inches cubed, or in3

Notes

    1. The volume of a sphere is given by (4/3)πr3
    2. r is a variable standing for the radius, which is 8 inches
    3. π is an irrational number we can approximate as 3.14
    1. The volume of a sphere is given by (4/3)πr3
    2. r is a variable standing for the radius, which is 8 inches
    3. π is an irrational number we can approximate as 3.14
    1. We can plug 8 for 'r' and 3.14 for π into V=(4/3)πr3
    1. Now we just need to use the order of operations to simplify the right hand side
    1. To cube a number, multiply it together 3 times
    2. 83, or 8 cubed, is 512
    3. Next we'd have to multiply what's inside the parentheses
    4. Make 1607.68 into a fraction by putting it over 1
    5. To shorten the answer, round it to two decimal places