This circle is centered at the origin, and the length pf its radius is 8. What is the equation of the circle?

is this a multiple choice question?

if so it's a and c

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3