Question 36830
(30+X)*(20+X)=2*(30*20) OR 600+50X+X~2=2*600 OR 600+50X+X~2=1200 OR X~2+50X-600

OR (X+60)(X-10)=0 OR X=10 OR 40*30=1200 OR 1200=1200 

10 METERS ARE ADDED TO THE LENGTH & THE WIDTH