Question: a man walking at the rate of 6 km per hour crosses a square field diagonally in 9 seconds the area of the field is
A) 110 sq . m
B) 111.5 aq . m
C) 112.5 sq . m
D) 114 sq . m
E) none of these
Correct answer: C
Grade: 7 | Topic: Geometry | Difficulty: Medium | Standard: 7.G.B.6