Equals meter minute 20 cm/s
Answer:
The approximate length of the diagonal walkway is 21.21 meters
Step-by-step explanation:
we know that
Applying the Pythagorean Theorem in the square park, find out the the approximate length of the diagonal walkway
so

where
c is the diagonal of the square
a and b are the length sides of the square
we have

substitute

therefore
The approximate length of the diagonal walkway is 21.21 meters
The percentage of 15% of 9 is 60% (I think)
What's the question?
If it's "What's the difference?" or something like that, then the answer is 15. :)