Question 35942
THE FORMULA FOR A RECTANGLULAR FIGURE IS LENGTH*WIDTH THEN IF THE LENGTH IS 3*WIDTH THEN THE EQUATION IS L*3L=75 IOR 3L~2=75 OR L~2=75/3 OR L~2=25 OR
TAKING THE SQRT OF BOTH SIDES WE GET L=5 THEN THE WIDTH IS 3*5 OR 15 SO
L*W=75 OR 5*(3*5)=75 OR 5*15=75 

NOTE: THE * MEANS MULTIPLY