Please help

Question

The expression pi(r-3)^2 represents the area covered by the hour hand on a clock in one rotation, where r is the radius of the entire clock. Write a polynomial in standard form that represents the area covered by the hour hand in one rotation.

Answer 1

A  = pi * (r-3)^2 = pi * (r^2 - 6r +9) = pi*r^2 - 6*pi*r + 9*pi