What is the area of the sector that is NOT shaded?

a. 80 pi units2
b. 16 pi units2
c. 20 pi units2
d. 8 pi units2

PLEASE HURRY :)

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Abcd is a square. what is the measure of angle bac

For the sequence [tex]a_{n} = 2n/(n+1)[/tex], what is the value of [tex]a_{10}[/tex]