The answer should be 452.16 because the formula for a sphere is 4 pi r² so 4 x 3.14 = is 12.56 and the radius of your sphere would be 6 because 12/2 and 6² x 12.56 or 36 x 12.56 would equal 452.16 But for a more accurate the answer on google is 452.39 but it isn't always right.
