Question
In the figure, DEFG is a rectangle. H is a point on line DE. J and K are points on line GF. The total shaded area of triangles GHJ and JEK is 220 cm2. DG = 20 cm and KF = 4 cm. Find the area of rectangle DEFG.
3 m

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In the figure, DEFG is a rectangle. H is a point on line DE. J and K are points on line GF. The total shaded area of triangles GHJ and JEK is 220 cm2. DG = 20 cm and KF = 4 cm. Find the area of rectangle DEFG.