<PRE><B>Question 1107492</B>
What is the length of a rectangle if the length is (x+3)cm, the width being 2cm and the area being 50cm Squared?
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Because the goal is to solve for length, which is x+3, the question may as well be re-phrased:

What is the length of a rectangle if the length is L cm, the width being 2cm and the area being 50 sq cm?

and we simply find L.
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A = L*W
50 = L*2
25 = L  
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Ans:  L=25cm
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