Answer:
.27
Step-by-step explanation:
75 42
----- -----
100 x
75 x= 4200
--- ------
75 75
x = 56
We know that
the equation of a circle is
(x-h)²+(y-k)²=r²
where
(h,k)-----> is the center
r--------> is the radius
is the center is the point (0,0) and radius r=20
then
(h,k) is (0,0)
(x-0)²+(y-0)²=20²---------> (x)²+(y)²=400
the answer is
the option D.) x2 + y2 = 400
C
Due to the fact that it is starting from 0 and moving in a steady pattern
