A man walking at the speed of 4 kmph crosses a square field diagonally in 3 minutes. The area of the field is:	Pick one.
A) 18000m2
B) 20000m2
C) 19000m2
D) 25000m2
E) 15000m2
Length of the diagonal= Distance covered in 3 min. at 4 km/hr.   = (4000/ 60 *3)= 
<gadget id="calculator">(4000/ 60 *3)</gadget>
<output>200</output>
200m.   Therefore, Area of the field= 1/2 * diagonal2   = ½ * 200*200 = 20000 m2   ANSWER:20000m2
<result>B</result>
A man walking at the speed of 4 kmph crosses a square field diagonally in 3 minutes. The area of the field is: