Answer:
using Triangle Proportionality theorem
10:(3x-5) = 8: (28-8)
10:3x-5 = 8:20
10/(3x-5) = 8/20
cross multiply
10 x 20 = 8 x (3x-5)
200 = 24x - 40
200 + 40 = 24x
240 = 24x
240/24 = x = 10
perimeter is the sum of all sides of triangles
the first side = 10+3x-5 = 10+ 3(10)-5 = 10+30-5 = 40 -5 =35
the second side = 28
the base = 16
35 + 28 + 16 = 79
Step-by-step explanation
