All you have to do is multiple 18 times 3 which is 54.
I think it's 10 times bigger than 756 because in 37,856 the 7 is in the thousands place and in 756 the 7 is in the hundreds place
Y= Square root of ((x+10)/7)
When two triangles are congruent they will have exactly the same three sides and exactly the same three angles. The equal sides and angles may not be in the same position (if there is a turn or a flip), but they are there. So in other words no matter what way it is flipped or anything else that does not change the numbers on the sides it is congruent.
The answer is 1/3 and the second box is -1/3