A metallic sheet is of rectangular shape with dimensions 50 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
Choose the correct choice from the following answers: A) 5440 B) 5120 C) 6420 D) 7500 E) 8960

Rationale: "l = ( 50 - 16 ) m = 34 m , b = ( 36 - 16 ) m = 20 m , h = 8 m . volume of the box = ( 34 x 20 x 8 ) m 3 = 5440 m 3 . answer : option a"
Answer: A