Volume of a sphere


Given the radius, the volume of a sphere can be found by using the following formula:
Sphere with radius r
V = (4/3) × pi × r3 and you can use pi = 3.14






Example #1

Find Vsphere   if r = 2 inches

Vsphere = 4/3 × pi × r3

Vsphere = 4/3 × 3.14 × 23

Vsphere = 4/3 × 3.14 × 8

Vsphere = 4/3 × 25.12

Vsphere = 4/3 × 25.12/1

Vsphere = (4 × 25.12)/(3 × 1)

Vsphere = (100.48)/3

Vsphere = 33.49 inches3


Example #2

Find Vsphere   if r = 3 cm

Vsphere = 4/3 × pi × r3

Vsphere = 4/3 × 3.14 × 33

Vsphere = 4/3 × 3.14 × 27

Vsphere = 4/3 × 84.78

Vsphere = 4/3 × 84.78/1

Vsphere = (4 × 84.78)/(3 × 1)

Vsphere = (339.12)/3

Vsphere = 113.04 cm3


Example #3

Find Vsphere   if r = 2/3 cm

Vsphere = 4/3 × pi × r3

Vsphere = 4/3 × 3.14 × (2/3)3

Vsphere = 4/3 × 3.14 × 2/3 ×2/3 × 2/3

Vsphere = 4/3 × 3.14 × 8/27

Vsphere = 4/3 × 3.14/1 × 8/27

Vsphere = (4 × 3.14 × 8) / ( 3 × 1 × 27 )

Vsphere = (100.48)/(81)

Vsphere = 1.24 inches3






Recent Articles

  1. Divide using Partial Quotients

    Apr 03, 17 09:12 AM

    Learn to divide using partial quotients. Understand the concept fast!

    Read More

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

            Follow me on Pinterest


Page copy protected against web site content infringement by Copyscape










Recent Lessons

  1. Divide using Partial Quotients

    Apr 03, 17 09:12 AM

    Learn to divide using partial quotients. Understand the concept fast!

    Read More