Answer:
C. 50ft
Explanation:
Perimeter is the outside and in perimeter you add
The length is 15ft
The width is 10ft
There are 4 sides so you want to add the length and width 2 times
L = 15 + 15 = 30
W = 10 + 10 = 20
Then add it all together
30 + 20 = 50
Hope this helps dude