Volume Calculations for Prisms and Cylinders

This video tutorial covers the volume of prisms and cylinders, focusing on slant prisms and cylinders. It explains how to classify solids as polyhedra or not, using the flatness of faces as a criterion. The tutorial introduces Cavalieri's principle to calculate the volume of slant prisms and applies similar concepts to cylinders. It also discusses scale factors and volume ratios, emphasizing the importance of cubing the scale factor for solids. Finally, the video demonstrates finding the volume of composite solids, using a cinder block as an example.

What determines if a solid is a polyhedron?

• If it has at least one curved surface

• If all faces are flat

• If it contains only triangular faces

• If it can roll smoothly on a surface

What is the base shape of a hexagonal pyramid?

• Triangle

• Circle

• Hexagon

• Rectangle

According to Cavalieri's Principle, what must be equal for two prisms to have the same volume?

• Their width

• Their height and cross-sectional area

• Their slant heights

• Their color

How do you calculate the volume of a triangular prism?

• Half the base area times height

• Length times width times height

• Base area times height

• Base area plus height

What formula is used to find the area of a trapezoid?

• Height times the sum of the two bases, all divided by two

• Base times height

• Length times width

• One-half base times height

What is the formula for the volume of a cylinder?

• Base area times height

• Pi times radius squared times height

• Pi times diameter squared

• Length times width times height

How does the volume of a slant cylinder compare to a right cylinder?

• It is more

• It cannot be determined

• It is less

• It is the same if the base area and height are the same

What does the scale factor cubed represent in volume comparisons?

• The difference in their heights

• The difference in surface area

• The sum of their radii

• The ratio of their volumes

If Cylinder A has a radius of 3 and Cylinder B has a radius of 6, what is the scale factor?

• 0.5

• 1

• 3

• 2

How do you calculate the volume of a composite solid like a cinder block with holes?

• Divide the volume of the block by the volume of one hole

• Add the volume of the holes to the solid block

• Multiply the volume of the block by the number of holes

• Subtract the volume of the holes from the solid block