Acircular pizza has a diameter of 12 inches . a pizza in the center of the pan has a radius of 4 inches . how much of the pan is not covered by the pizza use 3.14 for pi

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

Icould really use some with this question.

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0