The Area of a Circle with Radius Is Given

question 33

Multiple Choice

The area of a circle with radius is given by the power function . What happens to the area of the circle when the radius is multiplied by 3?

• A) The area increases by a factor of 9.
• B) The area is also multiplied by 3.
• C) The area increases by .
• D) Not enough information.
• E) The area increases by .

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Definitions:

Simplify

The process of reducing an expression or equation to its simplest form, by performing arithmetic operations and eliminating complex parts.

Complex Fraction

A fraction where the numerator, the denominator, or both contain fractions.

Simplify

The process of expressing something in a more comprehensible or simpler form, in mathematics, typically reducing an expression to its simplest form.

Expression

A combination of symbols that represent a mathematical object, such as numbers, variables, and operation symbols, but without an equals sign.