4/7 because the equation would be 2(7-5)
over
5+2
so it would be
2(2)
over
7
and then it would be
4
over
7
Answer:

Step-by-step explanation:
From the question we are told that
Architect Measures 2.5 feet (using the Brussels measurement)
Generally in Brussels 
Therefore

Generally in Aalst 
Therefore Mathematically converting to feet in Aalst measurement we get
Because it is an isosceles triangle, the two longer sides are the same length. Therefore multiply 6.3 times 2.
To find the length of the base subtract 12.6 from 15.7 to get 3.1 cm.