We can do this using Pythagorus,,,
87.5*2 - 52.5*2 = AB*2
4900 = AB*2
70 = AB
9 (3t + 4b) Distribute
9 * 3t + 9 * 4b Multiply
27t + 36b
Hope this helps!!!
First find the perimeter:
25 + 16 + 16 + 17 = 74 ft
find cost:
since it is $15 per 1 foot,
multiply 74 by 15
the answer is $1,110