If PQ is tangent to circle r at point q and PS is tangent to r at point s what is the perimeter of quadrilateral pqrs?

no not all of them.

step-by-step explanation:

some of them have a square base.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.