Starter: Volume of Cones

What is the formula for Volume of a Cone?

• V=π r³h
• V=π r²h
• V=(1/3)π r²h
• V=(4/3)π r³

V = ?

• 14.13 in³
• 56.52 in³
• 169.56 in³

A styrofoam model of a volcano is in the shape of a cone. The model has a circular base with a diameter of 48 centimeters and a height of 12 centimeters. Find the volume of foam in the model to the nearest tenth. Use 3.14 for π.

• 7234.6 cm³
• 7984.6 cm³
• 8934.4 cm³
• 6034.7 cm³

Mike has a large plastic cup that he is going to fill with water. The plastic cup is in the shape of a cone as shown. Which is closest to the volume of Mike’s cup?

• 21 cubic inches

• 63 cubic inches

• 66 cubic inches

• 198 cubic inches

• 3 in
• 15 in
• 6 in
• 9 in