Answer:
360 feet long.
Step-by-step explanation:
We have been given that a football field is 100 yards and also includes two end zones that are 10 yards long each.
Let us find the length of both end zones by multiplying 10 by 2 as field includes to end zones.


To find the total length of football field we will add the length of both end zones to the length of football field.


Let us convert 120 yards to feet by multiplying 120 by 3 as 1 yard equals to 3 feet.



Therefore, the football field is 360 feet long including the end-zones.