12mx12m=144m^2(area of the square below the whole figure)
12mx9mx4=432m^2(there are 4 sides)
(12mx10m)/2=60m^2(formula does triangle)
60m^2x4=240m^2(4 sides of a pyramid)
240m^2 + 432m^2 + 144m^2 = 816m^2(area of the figure including the pyramid and rectangle and square)
