Question 23
In the diagram, ABCD and DEFG are squares with AB = 9 cm and DE = 5 cm. If \(\angle CDG=90^\circ\), find the area (in cm²) of the shaded quadrilateral.
Input: enter the requested whole-number answer without units. You may omit leading zeroes from the paper answer grid.
Input: enter the requested whole-number answer without units. You may omit leading zeroes from the paper answer grid.