Answer i've done the math multiple times and everytime i get the answer 21,950. i don't think i'm doing the math wrong, maybe try asking the teacher or whoever is the one grading it cause it could be a typo or something like that.
P = s + (s + 5) + (s + 5) This represents the two sides that are 5 inches longer than the base (s + 5) and the base (s). Simplifying. 100 = 3s + 10 subtract 10 from both sides 90 = 3s divide both sides by 3 30 = s base = 30 sides = 35
