C. Use the following information to write an equation in terms of x. Then solve the equation and find RS and RT RS = 2x - 8; ST = 11; RT = x + 10 I don’t get it

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

it is x equals 3   plese mark me really need it

step-by-step explanation:

i honestly dont know