Which of the following are solutions to the equation below? check all that apply. 4x^2+4x+1=9
a. x= square root of 2
b. x= -square root of 10 + 1/2
c. x= 1
d. x= square root of 10 + 1/2
e. x= square root of 2/ 2
f. x= -2

In the diagram, be and ad pass throughthe center of circle o, and the area ofsector aoc is 47.45 square units. what isthe area of sector boc? use the value =3.14, and round your answer to two decimalplaces.22.33 square units25.12 square units