13. In the figure, ABCD is a rectangle of sides 28 m and 15 m. PBRQ is a square of sides 6 m. (i) Find the area of the shaded region DPQR. (ii) Calculate the length of DP. (iii) Given that X is a point on DP such that AX is perpendicular to DP, find the length of AX. A 15 m D X 28 m Q P B R C 6 m
