One of the equations for a circle is (x - h)² + (y - k)² = r² where (h, k) are the center and r is the radius.
So after substitution:
(x + 6)² + (y - 2)² = 100
Notice the equation has the opposite of h and k and 100 is the result of squaring 10.
Answer:
The surface area is 552 square cm.
If you round up the 27.64 to 28 and then multiply it bye 3 it eaquals 84
