The answer would be -2842 hope i helped good luck :)
P=2a+2b
P=36
a=12
36=2*12+2b
36=24+2b
36-24=2b
12=2b
b=6
So, the length of the remaining sides is 6 each.
The answer is 5 miles. Megan can run for an hour. 1 hour divided by 12 gives 60/12 in minutes (1 hr is 60 minutes).
60/12 is 30/6 is 15/3 is 5 miles.