find the circumference and area of a circle with a diameter of 22 inches. leave your answers in the terms of pi

121π

Step-by-step explanation:

The formula for a circle is πr^2. But if given a diameter instead of radius, you simply divide by 2 because radius is half of a diameter.

Radius of this circle is 11 because you divide 22 by 2.

Then you follow the formula. 11^2=121.