Answer: 98 inches
=======================================================
Step-by-step explanation:
The scale factor is found by dividing the image length over the preimage length. In this case, the scale factor is 28/8 = 7/2 = 3.5
This means the larger triangle's side is 3.5 times longer compared to the smaller triangle's corresponding sides.
This consequently means the perimeter of the larger figure being 3.5 times larger than the smaller perimeter.
----------
larger perimeter = (scale factor)*(smaller perimeter)
larger perimeter = (3.5)*(28)
larger perimeter = 98 inches