From the chord theorem we have:

Answer:
60
Step-by-step explanation:
If the perimeter is 90 feet and on side is 26 feet then the width of the playground is 38 feet
Answer: (w+16)8 ≥ -28
*≥ means greater than or equal to. Since the value of the expression is AT LEAST -28, the number could be -28 or anything greater.
Hope this helps,
LaciaMelodii :)