Question

Question attached
(Surface Area, Volume of solid hemisphere)

Answer 1

What you are given is the total surface area. You are also given the surface area formula. You need to go backwards by setting the formula equal to the total surface area and solving for r.

Answer 2

Find the radius from the surface area and calculate the volume and find k from it

Answer 3

But i have to divide it by 2 since it is a hemisphere?

Answer 4

4pir^2=243pi
divid the pi's
divide by 4 then take the square root as the radius.