Radius = 1111
The ' 1 ' in that equation is the radius.
sqrt 36 ie 6
10. Equation of circle is x2 + y2 = r2. Consider: when x = 0 y2 must = 100 so y = 10 which describes a circle centre the origin, radius 10. Similarly when x = 10 y must be 0.
11 = sqrt of 121. it is a circle centred on the origin think what would happen on the line x=0 (The y axis) the equation simplifies to y2 = 121 or y =11 you can also think of eqn of a circle as x2+y2=r2
chords inside circles can be any length from the diameter to almost zero length.
The length of the arc of ABC is 22pi. You can get this answer by completing this equation 330/360*24pi, which will give you 22pi.
Circle A has more area than B
The center of a circle is the same for all circles but the length of the radius can change
x2 + y2 = 49