Quadrilateral ABCD has sides AB=13m, BC=15m, CD=13m, DA=15m and diagonal AC=24m.
a. Part 1: (a) Show that triangle ABC and triangle ADC can each be constructed from the given measurements.
b. Part 2: (b) Find the semiperimeter of triangle ABC.
c. Part 3: (c) Calculate the area of triangle ABC.
d. Part 4: (d) Hence, find the total area of quadrilateral ABCD.