Problem: the side of a square has the length of 6 . what is the area of the region shaded ?
Rationale: the area of a square whose side is 6 – ( the area of a square whose side is 4 + the area of the semi - circle whose side is 4 ) = the area of the region shaded the correct answer is b .
annotated_formula: subtract(multiply(const_3, multiply(const_4, const_4)), multiply(6, const_pi))