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The volume of a cylinder is π times the radius of the base of the cylinder squared, and this is multiplied by the height. A cylinder's radius is 17 inches, and its height is 14.6 inches. Which statements about these quantities are true? Choose all that are correct.

A) The number representing the volume of the cylinder is irrational.
B) The number representing the radius of the cylinder is rational because all square roots are rational.
C) The volume of the cylinder is rational.
D) The height of the cylinder is irrational.

1 Answer

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Final answer:

The volume of the cylinder is an irrational number because it includes π. The radius and height of the cylinder are rational numbers. Therefore, statements A is true, and statements B, C, and D are false.

Step-by-step explanation:

The question pertains to volume calculation and number properties, specifically rational and irrational numbers, using a given cylinder with radius 17 inches and height 14.6 inches. To determine the volume of this cylinder, we use the formula V = πr²h. Upon calculating the volume with these dimensions, we get V = π(17 inches)²(14.6 inches), a number which will include π. Since π is an irrational number, the product will also be irrational, making statement A correct. For statement B, it's crucial to clarify that not all square roots are rational; a number is rational if it can be expressed as a ratio of two integers. The radius is given as 17 inches, a rational number, but this information is not related to whether square roots are rational or not, thus statement B is incorrect. Statement C is incorrect for the same reason A is correct: the volume contains π, making it irrational. The height of the cylinder is given as 14.6 inches, a number that can be expressed as a fraction (​146/10), making it a rational number and rendering statement D false.

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