if length of a room is three times of its breadth and its area is 12 sq.m.what is perimeter of room?
Choose the correct answer
A) 14 m	B) 18 m	C) 24 m	D) 16 m	E) none of the above
let breadth=x m. and length = 3x m.   x*3x=12,x^2=4,x=2.   length=6m,breadth = 2 m.   perimeter=2*(6+2)= 
<gadget id="calculator">2*(6+2)</gadget>
<output>16</output>
16 m   answer 16 m
<result>D</result>
if length of a room is three times of its breadth and its area is 12 sq.m.what is perimeter of room?