Answer: 
Step-by-step explanation:
The first step to solve the exercise is to make the conversion from meters to centimeters.
Since
, then the dimensions of the wood board in centimeters are:

Now, you must find the Greatest Common Factor (GCF). The steps are:
- Descompose 100 and 60 into their prime factors:

- Multiply the commons with the lowest exponents:

Therefore, the side lenght of each square must be:

for an isosceles right triangle the legs would be 2 times the square root of the hypotenuse
so for this:
the legs would be 2sqrt(10)
You have to take the amount of money payed, which in this case is 45.50, and divide it with 7.