Answer:
115.5
Step-by-step explanation:
comparing side lengths of 49 and 28:
49 ÷ 28 = 1.75, so to get from 28 to 49 multiply by 1.75
this is the same thing for side lengths 38.5 and 22 as
22 × 1.75 = 38.5
the scale factor of the first triangle (GHI) to the second triangle (JKL) is 1.75 which means multiply each side of the first triangle by 1.75
so to work out x:
16 × 1.75 = 28
perimeter of JKL (second triangle) - add up lengths of the sides:
28 + 38.5 + 49 = 115.5
