Surface Area and Volume of Spheres (Year 10A)

LO: To find surface area and volume of Spheres

Know:

  • the definition of radius and π
  • the definition of volume and surface area

Understand:

  • That formulas can be used to quickly find the surface area and volume of spheres.

Do:

  • I can find the surface area and volume of spheres.

Sphere

A sphere is a round solid figure where every point on its surface is exactly the same distance from the centre.


Volume of Spheres

To find the volume of a sphere, you need to multiply the radius cubed of the sphere by 

π then by 4 and divide the answer by 3

.

Surface Area of Sphere

To find the surface area of a sphere, you need to multiply the radius squared of the sphere by π and then multiply the answer by 4.

Surface Area and Volume of Spheres Videos