Please answer this correctly

z=4 km

Step-by-step explanation:

P(of a triangle)=a+b+c

12 km=4+4+z

12=8+z

z=12-8

z=4 km

4km

Step-by-step explanation:

Therefore, as we know that the formula for perimeter of triangle is sum of all sides,

P= Z+4km+4km

12= Z+8

12-8= Z

Therefore, Z is equal to 4 km

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+

25.45584

what statement? is there an image?