What is the surface area of a sphere with a diameter of 4?*
O
57.63 u2
87.6 u2
50.2 u2
63.9 u2

Answer:
50.2 u²
Step-by-step explanation:
SA = 4 pi r²
SA = 4 × 22/7 × 2 × 2
SA = 50.2 u²