The roof of an apartment building is rectangular and its length is 4 times longer than its width. If the area of the roof is 576 feet squared, what is the difference between the length and the width of the roof?
Pick:
A) 38.	B) 40.	C) 36.	D) 44.	E) 46.
Let the width= x   x*4x=576   x^2= 144   x= 12   Length= 4*12= 
<gadget id="calculator">4*12</gadget>
<output>48</output>
48   difference= 48-12= 
<gadget id="calculator">48-12</gadget>
<output>36</output>
36   36. is the answer
<result>C</result>
The roof of an apartment building is rectangular and its length is 4 times longer than its width. If the area of the roof is 576 feet squared, what is the difference between the length and the width of the roof?