The Area of a Circle with Radius Is Given

question 114

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:

Static Variables

Variables that retain their value between function calls and are local to the function block in which they are declared but their lifespan is the duration of the program.

Automatic Variables

Variables that are automatically allocated on the stack and are local to the function block in which they are declared.

Static Variables

Variables that retain their value between multiple function calls, existing for the duration of a program's execution.

Register Variable

A type of variable that is stored in a CPU register instead of RAM to provide faster access to its value.