ANSWER:
4.52 square millimeters.
STEP-BY-STEP EXPLANATION:
The surface area of a sphere is given by the following equation:
[tex]A=4\pi\cdot r^2[/tex]We know the diameter of the egg, the radius is equal to half the diameter, therefore the radius is 0.6 millimeters, we substitute and calculate the surface area:
[tex]\begin{gathered} A=4\pi\cdot(0.6)^2 \\ A=1.44\pi \\ A=4.52mm^2 \end{gathered}[/tex]Therefore the surface area is 4.52 square millimeters.