# algebra

posted by
**Anna**
.

Solve. Leave the answers in terms of pi ?.

a)Find a polynomial for the sum of the areas of the circles shown in the figure.

b)Find the sum of the areas when r = 5 and r = 11.3.

this is what I got but I did not do it right. I needed to To write an expression for the sum, i need to put everything together by adding the three terms that i wrote below but not sure how to start.

(pi*r2)+(pi*r2)

(pi*52)+(pi*11.32)

(25pi)+(127*69pi)

(152.69pi)

Large circle: A=pi*r2, Medium circle A=pi*32, Small circle A=pi*22