Comparing Volumes of 3D Shapes

The video tutorial explains how to find and compare the volumes of a cylinder, cone, and sphere, all with the same radius and height. It begins by setting up the problem and then calculates the volume of each shape using their respective formulas. The cylinder's volume is calculated first, followed by the cone, which is shown to be one-third of the cylinder's volume. Finally, the sphere's volume is calculated as two-thirds of the cylinder's volume. The tutorial emphasizes understanding the relationships between these shapes to predict volume differences.

What is the common radius of the cone, cylinder, and sphere discussed?

• 6 cm

• 9 cm

• 3 cm

• 12 cm

What is the height of the cylinder used in the calculations?

• 9 cm

• 6 cm

• 12 cm

• 3 cm

What is the diameter of the sphere?

• 3 cm

• 12 cm

• 6 cm

• 9 cm

What formula is used to calculate the volume of the cylinder?

• πr^2h

• 1/3 πr^2h

• 4/3 πr^3

• 2/3 πr^2h

Which shape has the greatest volume?

• Cone

• All have the same volume

• Cylinder

• Sphere

Why is it useful to leave the volume in terms of π when comparing?

• It increases accuracy

• It makes the numbers smaller

• It simplifies calculations

• It is required by mathematical rules

How is the cone's volume related to the cylinder's volume?

• 2/3 of the cylinder

• 1/2 of the cylinder

• Equal to the cylinder

• 1/3 of the cylinder

How many times more volume does the cylinder have compared to the cone?

• 4 times

• 3 times

• 2 times

• 5 times

What is the volume of the sphere in terms of π?

• 36π

• 54π

• 18π

• 72π

What is the relationship between the sphere's and cylinder's volumes?

• The sphere is 1/3 of the cylinder

• The sphere is equal to the cylinder

• The sphere is 2/3 of the cylinder

• The sphere is 1/2 of the cylinder