The area of a square field is 7201 sq m. How long will a lady take to cross the field diagonally at the rate of 1.2 km/hr?
Choose the correct choice from the following answers
A) 6 min B) 5 min C) 5.5 min D) 4 min E) 3 min
6 minrea of a square field = 7201 sq m   Let the side of square = a   a^2 = 7201   =&gt; a = 84.86   Diagonal = (2)^(1/2) * a   = 1.414 * 84.86   =120   Speed of lady = 1.2 km / hour   = 1200 m / hour   = 20 m / min   Time taken by lady to cross the field diagonally = 120/20= 
<gadget id="calculator">120/20</gadget>
<output>6</output>
6 min   6 minnswer 6 min
<result>A</result>
The area of a square field is 7201 sq m. How long will a lady take to cross the field diagonally at the rate of 1.2 km/hr?