Anyway, John found himself watching one of the games on television and, being used to American Football where the ball has a funny shape, wondered if calculating the surface area of the ball could be done using the mathematics he had learned at high school. Maybe you can assist him, assuming that the balls used for soccer are perfect spheres and the surface of a sphere is 4 × p × r ² (I do not need to tell you that p is 3.1415926535...).
A ball with radius R has a surface area of S square meters.', where R is the radius in meters, with a fractional part of exactly two digits, and S is the surface area of the ball, rounded to a fractional part of exactly four digits.
3 1 10 100
A ball with radius 0.01 has a surface area of 0.0013 square meters. A ball with radius 0.10 has a surface area of 0.1257 square meters. A ball with radius 1.00 has a surface area of 12.5664 square meters.