Add the fractions together to find the portion who like basketball, soccer and football.
=1/3 + 1/8 + 5/12 need a common denominator (24)
=8/24 + 3/24 + 10/24 =21/24
simplify by 3 =7/8 like basketball, football & soccer
7/8 is the total for basketball, soccer and football. If 8/8 represents the whole class, then subtract 7/8 from 8/8 to find the number who like baseball.
r^2 (r represents your radius of 4 feet)