The Diameter of a Circle Is Doubled

question 49

Multiple Choice

The diameter of a circle is doubled. By what factor is the area changed?

• A) √2
• B) 2
• C) 4
• D) √4
• E) 1

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Definitions:

Birth Rate

The number of live births per thousand of population per year.

Death Rate

The number of deaths in a particular population, scaled to the size of that population, per unit of time.

Population Regulation

The mechanisms or processes by which populations maintain their size and composition through factors like birth rates, death rates, immigration, and emigration.

Basic Necessities

Fundamental needs required for maintaining life, such as food, water, shelter, and clothing.