Question

Perimeter is 342 ft, length 99ft, what is the width

Answer 1

In formula, you take length * 2 + width *2 = perimeter 

2L + 2W = P

put in the numbers and

2 (99) +2W = 342

198 + 2W = 342

2W = 342 - 198 

im sure you can do the rest. PM me for additional help, Good luck!