SOLUTION: The sides of a square measure 7 feet. How long is the diagonal? 9.9 ft 9.7 ft 11.2 ft 10.3 ft I dont need the answer, I just would like an explanatio

Algebra ->  Length-and-distance -> SOLUTION: The sides of a square measure 7 feet. How long is the diagonal? 9.9 ft 9.7 ft 11.2 ft 10.3 ft I dont need the answer, I just would like an explanatio      Log On


   

Question 41307This question is from textbook Pre-Algebra
: The sides of a square measure 7 feet. How long is the diagonal?

9.9 ft
9.7 ft
11.2 ft
10.3 ft
I dont need the answer, I just would like an explanation on how to solve this.

 This question is from textbook Pre-Algebra

Answer by zeynep(43) About Me  (Show Source):
You can put this solution on YOUR website!
When you draw the diagonal of a square, you obtain two isosceles-right triangles. Take one of these triangles; the diagonal is the hypotenuse of this triangle and the other sides of the triangle are 7 ft. So if we write the pythogorean theorem for this triangle;
diagonal^2=7^2+7^2
diagonal^2=49+49
diagonal^2=98 find the sqrt of oth sides;
diagonal = 9.9 ft