Agym charges a one-time registration fee as well as a monthly fee. the cost of joining the gym for 4 months is $370, and the cost of joining for 6 months is$530. write and solve a system of equations to find the registration fee and monthly fee.

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

a = 11 : 4

b = 38

c = 1 for every 6