Answer:
A = approximately 12.6 cm^2p-by-step explanation:
The formula for the surface area of a ball of radius r is A = 4(pi)r^2. Here the diameter is 4 cm, so the radius must be 2 cm. Thus, the area of this table tennis ball is A = 4(3.14)(2 cm)^2, or A = approximately 12.6 cm^2
