Understanding Volume and Cube Roots

The video tutorial explains the concept of volume in 3D figures, focusing on cubes. It demonstrates how to calculate the volume of a cube by multiplying its sides and introduces the concept of cube roots to find the side length from a given volume. The tutorial also provides guidance on using calculators to compute cube roots and solve equations involving cube roots, highlighting the difference between rational and irrational cube roots.

What is the volume of a cube with a side length of 4 units?

• 16 cubic units

• 32 cubic units

• 64 cubic units

• 12 cubic units

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CCSS.8.EE.A.2

If a cube has a volume of 64 cubic units, what is the length of one side?

• 8 units

• 5 units

• 6 units

• 4 units

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CCSS.8.EE.A.2

Which operation would you use to find the side length of a cube if you know its volume?

• Subtraction

• Square root

• Addition

• Cube root

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CCSS.8.EE.A.2

How do you find the cube root of a number using a computer calculator?

• Use the basic mode and type the number

• Switch to scientific mode and use the cube root function

• Use the basic mode and multiply the number by itself

• Use the graphing mode and plot the number

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CCSS.8.EE.A.2

What is the cube root of 27?

• 9

• 6

• 3

• 12

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CCSS.8.EE.A.2

If x^3 = 512, what is the value of x?

• 6

• 8

• 12

• 10

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CCSS.8.EE.A.2

What is the opposite operation of cubing a number?

• Cube root

• Squaring

• Addition

• Square root

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CCSS.8.EE.A.2

What is the cube root of 1,728?

• 12

• 13

• 11

• 10

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CCSS.8.EE.A.2

Which of the following is an example of an irrational cube root?

• Cube root of 8

• Cube root of 27

• Cube root of 60

• Cube root of 64

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CCSS.8.NS.A.1

What characterizes an irrational number when calculated?

• It is always less than 1

• It results in a whole number

• It has a repeating decimal pattern

• It results in a non-repeating, non-terminating decimal

Tags

CCSS.8.NS.A.1