Lesson 11-6: Surfaces areas and volumes of spheres

Lesson 11-6: Surfaces areas and volumes of spheres

The surface area (S.A) of a sphere:
S.A=  $4\pi r^2$  

where r is the radius of the sphere

Multiple Choice

Find the surface area of the sphere

• $400\ m^2$

• $400\pi\ m^2$

• $100\pi\ m^2$

• $100\ m^2$

The Volume (V) of a sphere:
S.A=  $\frac{4}{3}\pi r^3$  

where r is the radius of the sphere

Multiple Choice

Find the Volume of the ball

• $288\pi\ cm^3$

• $2304\pi\ cm^3$

• $288\ cm^3$

• $2304\ cm^3$

Multiple Choice

 $A\ sphere\ has\ the\ volume\ of\ 36\pi\ ft^3.$ Which is its radius?

• 4ft

• 3ft

• 2ft

Multiple Choice

Which is the volume of the sphere?

• $85\ cm^3$

• $682\ cm^3$

• $268\ cm^3$

• $2145\ cm^3$

Multiple Choice

Which is the surface area of the ball?

• $18496\pi\ mm^2$

• $18496\ mm^2$

• $4624\pi\ mm^2$

• $4624\ mm^2$