Is there any more to the question than this?
Answer:
3
Step-by-step explanation:
If you are looking for the area of that, the answer would be 49 meters squared since in area, it is always length times width. 7x7=49. that answer would be 49 meters squared
The answer might be 45 x 1, because 45 is the greatest factor of 45.
If you want to know why tell me
To solve this you will need to know the Pythagorean therum A^2+B^2=C^2
24^+B^2=28^2
576+B^2=784
-576. -576
B^2=208
Square root of 208 is about 14.42 and that is the length of the wall