Volume and Surface Area Concepts

The video tutorial covers the calculation of the volume of a cylinder, comparing it to the volume of a prism. It explains the formula for cylinder volume, PI R squared H, and demonstrates its application through exercises. The tutorial also addresses common errors in volume calculations and introduces the volume addition postulate. Additionally, it discusses the use of dimensional analysis and Cavalieri's principle in geometry, providing a comprehensive understanding of these concepts.

What is the formula for the volume of a cylinder?

• PI R squared H

• PI R H squared

• 2 PI R H

• 2 PI R squared H

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CCSS.7.G.A.3

What shape is the base of a cylinder?

• Rectangle

• Circle

• Triangle

• Square

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CCSS.8.G.C.9

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If the radius of a cylinder is 7 feet and the height is 12 feet, what is the volume in cubic feet?

• 84 PI

• 588

• 49 PI

• 588 PI

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Why is it important to use the PI key on calculators instead of 3.14?

• PI key is more accurate

• 3.14 is not a valid approximation

• 3.14 is only for circles

• PI key is easier to use

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CCSS.8.G.C.9

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What is the common mistake in calculating the volume of a cylinder as shown in the error analysis?

• Using PI R squared instead of PI R squared H

• Using 2 PI R squared H instead of PI R squared H

• Using PI R H squared instead of PI R squared H

• Using 2 PI R H instead of PI R squared H

What does the formula 2 PI R H calculate?

• Lateral area of a cylinder

• Circumference of a cylinder

• Surface area of a cylinder

• Volume of a cylinder

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CCSS.5.MD.C.5B

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In the volume addition postulate, what is the volume of a cube with a side length of 4 inches?

• 64 cubic inches

• 128 cubic inches

• 32 cubic inches

• 16 cubic inches

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CCSS.8.G.C.9

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How do you calculate the volume of a half-cylinder?

• PI R H squared

• 2 PI R squared H

• 1/2 PI R squared H

• PI R squared H

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CCSS.8.G.C.9

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What principle states that the volume of an oblique cylinder is the same as that of a right cylinder?

• Cavalieri's Principle

• Archimedes' Principle

• Pythagorean Theorem

• Pascal's Law

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CCSS.HSG.CO.C.10

In a 30-60-90 triangle, what is the ratio of the sides?

• 1:2:3

• 1:√2:2

• 1:1:1

• 1:2:√3

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CCSS.HSG.CO.C.10