Arya starts cycling along the boundaries of the squares. She starts from a point A and after 90 minutes she reached to point C diagonally opposite to A. If she is travelling with 20km/hr, then find the area of square field.
Pick one.
A) 125  B) 225  C) 325  D) 425  E) None of these
Explanation :   D = 20*3/2= 
<gadget id="calculator">20*3/2</gadget>
<output>30</output>
30 km. So side of square is 15km, so area – 225km^2   Answer – 225
<result>B</result>
Arya starts cycling along the boundaries of the squares. She starts from a point A and after 90 minutes she reached to point C diagonally opposite to A. If she is travelling with 20km/hr, then find the area of square field.