the answer is 44 im not positive tho
The equation of a circle is (x - h)^2 + (y - k)^2 = r^2
x and y are left alone in a circle equation, while h and k are the coordinates of the center.
Thus, our equation is (x - 7)^2 + (y + 2)^2 = 61
Why not look up "standard deviation" yourself, to be sure? But yes, the std. dev. is the sqrt of the variance.
The answer is 0.8. Non of the options are correct
