Answer:
Step-by-step explanation:
using Triangle Proportionality theorem, it states that if a constructed line parallel at one side of a triangle intersects the other two sides of the triangle and divides the remaining two sides proportionally; meaning
10:3x-5 = 8:28
10 = 8
3x-5 20
cross multiply
10 x 20 = 8(3x-5)
200 = 24x - 40
add 40 to both sides
200 + 40 = 24x - 40 + 40
240 = 24x
divide both sides by 24
240/24 = x
10 = x
b. perimeter is side + side + base
{10+(3x-5)} + {16} + {28}
since x =10
10+(3(10)-5)
10+30-5
40-5=35
35+16+28=79
