Please answer this correctly

3,868 m²

Step-by-step explanation:

The radius (r) of the big circle is 17 + 22 = 39

                  A = π·r²

                      = π(39)²

                      = 1521 π

The radius (r) of the small circle is 17

                  A = π·r²

                      = π(17)²

                      = 289 π

The area of the shaded region is the difference between the area of the big circle and the area of the small circle.

                 = 1521 π - 289 π

                 = 1232 π

                 = 1232(3.14)

                 = 3,868.48

b.an increase in a causes b to decrease