Question

The area A of a circle with radius r is given by the function A(r)= pie r^2. Explain what A(3) represents

Answer 1

A(3) = pi (3)^2.

Explanation:

A(3) represents the area of a circle with a radius of 3.

Answer 2

Hello!

A(r) is a function. It takes a value of r, and from that calculates the value A. In this case, it takes the value of a radius, and depending on what that value is, it calculates the area.

A(3) would therefore represent the area based off of a radius of 3.

Hope this helps!