We know that the perimeter is 72 meters, so we have

Now we can use the pythagorean theorem: the sum of the squares of the legs is the square of the hypotenuse:

Expand the squares to get

Bring everything to the right hand side to get

Divide both sides by 8:

This equation has solutions 
This solutions would yield the following side lengths:


Since we can't have negative side lengths, we can only accept the solution x=9.
In fact, you can check that 18,24,30 is a pythagorean triplet, i.e.

Answer:
Step-by-step explanation:
-4( -6/8 ÷ 1/2)

350*0.2=70
350-70=280
so the answer is 280
False.
2 points that map the borders of a city could meet up at a ridge or valley.
Answer:
She has FOUR 20p coins altogether.
Step-by-step explanation:
1.40-0.10-0.50=0.8
0.8/0.2=4