Can someone help me with this thank you

Step-by-step explanation:

Area of square = side * side

                        = 4 * 4

                         = 16 sq.ft

Area of triangle =

Area of the figure =  area of square + area of triangle

                             = 16 + 4

                              = 20 sq.ft

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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