Who is a math genius and would like to interact to do some basic math khan assignments? ? i really need the

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.