Answer: Side One: 6 ft
Side Two: 19 ft
Side Three: 20 ft
Explanation:
o=side one. t=side two. h=side three. P=perimeter
o=t-13
h=t+1
P=o+h+t
45=t-13+t+1+t
45=t+t+t-13+1
45=3t-12
3t=57
t=19
o=t-13
o=19-13
o=6
h=19+1
h=20
Side One: 6 ft
Side Two: 19 ft
Side Three: 20 ft