Answer:
8260
Step-by-step explanation:
make a line in such a way that the figure is divided into an isosceles triangle and a square.
then calculated the areas separately and add them.
area of the triangle= b/4 √4a^2-b^2. = 8064 square units
area of square = l^2 = 14^2. = 196 square units.
total area = 8064+196 = 8260
