Volume of Spheres

Volume of Spheres

Poll

It is Wednesday! How are you?

• sleepy

• hungry

• ready for friday

• thinking about my boo

So far, we have practiced cylinder & cone, lets talk SPHERES

Open Ended

Name real-world examples of SPHERES (be creative)

a sphere is a 3D circle, it has NO points/corners/edges.

Volume of Spheres

Formula

​(4/3) x (3.14) x (radius x radius x radius)

​if radius is 5,

(4/3) x (3.14) x (5 x 5 x 5)

(4/3) x (3.14) x (125)

523.333

Lets practice setting up our formula!

Multiple Choice

the radius is 6

• (4/3) x (6 x 6 x 6)

• (4/3) x (3.14) x (6 x 6)

• (3.14) x (6 x 6)

• (4/3) x (3.14) x

  (6 x 6 x 6)

Multiple Choice

the radius is 2.5

• (4/3) x (3.14) x (2.5 x 2.5)

• (4/3) x (2.5 x 3)

• (4/3) x (3.14) x (2.5 x 2.5 x 2.5)

Multiple Choice

do spheres have a height?

• no, there is no 'h' in formula

• yes

Multiple Choice

the diameter is 14

• (4/3) x (3.14) x (14 x 14 x 14)

• (4/3) x (3.14) x (14 x 14)

• (4/3) x (3.14) x (7 x 7)

• (4/3) x (3.14) x (7 x 7 x 7)

Let's calculate volume!

Multiple Choice

The formula for the Volume of ...

• Spheres
• Cones
• Cylinders

Multiple Choice

Is the red line a radius or diameter of the circle?

• Radius

• Diameter

Multiple Choice

What shape is this?

• Cylinder
• Cone
• Sphere

Multiple Choice

Find the volume to the nearest hundredth using 3.14 instead of Pi.

• 5572.45 cm³
• 506.59 cm³
• 126.65 cm³
• 1393.11 cm³

Multiple Choice

Find the Volume of the Sphere

• 904.32 ft³
• 7,234.56 ft³
• 150.72 ft³

Multiple Choice

Find the volume of the hemisphere

• 904.3 in³
• 226.1in³
• 113.0 in³
• 452.2 in³