Understanding Volume of a Cylinder

The video tutorial explains how to calculate the volume of a cylinder using the formula V = B * H, where B is the area of the base. It emphasizes the difference between capital B (area of the base) and lowercase b (base length). The tutorial covers how to find the area of a circle using the formula pi r squared, where r is the radius. It then demonstrates calculating the volume by multiplying the base area by the height of the cylinder, providing both exact and approximate solutions using pi.

What does the capital B represent in the formula for the volume of a cylinder?

• The circumference of the base

• The volume of the cylinder

• The height of the cylinder

• The area of the base

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Why is it important to distinguish between capital B and lowercase b in volume formulas?

• Capital B is for the volume, lowercase b for the area

• Both represent the same thing

• Capital B is for the area of the base, lowercase b for the base itself

• Capital B is used for the height, lowercase b for the base

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What shape is the base of a cylinder typically?

• Triangle

• Circle

• Rectangle

• Square

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How do you calculate the area of a circle?

• pi times radius times height

• pi times diameter squared

• pi times radius squared

• 2 times pi times radius

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What does the 'r' in the formula pi r squared stand for?

• Rectangle

• Radius squared

• Radius

• Radian

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CCSS.8.G.C.9

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What is the volume of a cylinder with a base area of 9 pi and a height of 2?

• 36 pi

• 9 pi

• 18 pi

• 18

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What should you remember about units when calculating volume?

• Use square units

• Use cubic units

• Units are not important

• Use linear units

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CCSS.8.G.C.9

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If pi is approximated as 3.14, what is the volume of the cylinder?

• 56.52 cubic units

• 18 cubic units

• 36 cubic units

• 28.26 cubic units

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What should you do if pi is not an option in your homework?

• Ignore pi

• Use 3 for pi

• Use 3.14 for pi

• Use 2 for pi

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