4.A circle with its dimensions, in centimeters (cm), is shown. 5cm
What is the area, in square centimeter of the circle? Use 3.14 for 1. Round your
answer to the nearest tenth.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8