You can make an equation with these numbers.
182 ÷ 2 = 91 ÷ 2 = 45.5
Hope this helps!
The constant between two consecutive terms is called the common difference.
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
Use the equation of midpoint (p is point)
Xp=Xa+Xb/2
4-2/2
2/2=1
Yp=Ya+Yb/2
9/2=4.5
So point (1,4.5)