The width of a rectangular hall is ½ of its length. If the area of the hall is 200 sq.m, what is the difference between its length and breadth?  Choose the correct choice from the following answers
A) 8m B) 10m C) 12m D) 15m E) 17m
Let the length of the hall be x m   10mreadth of the hall = 1x/2 m   Area of the hall = Length * 10mreadth   200 = x * 1x/2   x² = 400   x =20   Difference between the length and breadth of the hall = x - 1x/2 = x/2   =20/2= 
<gadget id="calculator">20/2</gadget>
<output>10</output>
10m   ANSWER:10m
<result>B</result>
The width of a rectangular hall is ½ of its length. If the area of the hall is 200 sq.m, what is the difference between its length and breadth?