A rectangular field has a length 10 meters more than it is width. If the area of the field is 200, what is the length (in meters) of the rectangular field?  Choose the correct choice:
A) 20  B) 22  C) 24  D) 26  E) 28
area = l * w = (L) * (L-10) = 200   trial and error:    19*9= 
<gadget id="calculator"> 19*9</gadget>
<output>171</output>
171 (too low)   20*10= 
<gadget id="calculator">20*10</gadget>
<output>200</output>
200   The length is 20 meters.   The answer is 20.
<result>A</result>
A rectangular field has a length 10 meters more than it is width. If the area of the field is 200, what is the length (in meters) of the rectangular field?