Answer:
A 48
Step-by-step explanation:
1)
Rearrange the expression.
2)
Solve.
3)
36
The surface area formula for any sphere is 4(pi)(radius)^2
The radius is half of the diameter.
18.6 / 2 = 9.3
So, plug into the formula and solve.
4(3.14)(9.3)^2 = 1086.3 mm^2
