The width of a rectangular hall is ½ of its length. If the area of the hall is 128 sq.m, what is the difference between its length and breadth?  Pick one.
A) 8m  B) 10m  C) 12m  D) 15m  E) 17m
Let the length of the hall be x m   Breadth of the hall = 1x/2 m   8mrea of the hall = Length * Breadth   128 = x * 1x/2   x² = 256   x =16   Difference between the length and breadth of the hall = x - 1x/2 = x/2   =16/2= 
<gadget id="calculator">16/2</gadget>
<output>8</output>
8m   8mNSWER:8m
<result>A</result>
The width of a rectangular hall is ½ of its length. If the area of the hall is 128 sq.m, what is the difference between its length and breadth?