The perimeter of the figure below is 139.1 ft. Find the length of the missing side. ?
20.2 ft
18.8 ft
11.6 ft
7.2 ft
11.6 ft
11.6 ft
8.6 ft
30.4 ft
11.6 ft
.

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

$649.60

step-by-step explanation:

the correct answer is 1.7