SOLUTION: Whats the lenth of a diagonal of a rectangle when the sides are 6ft and 3ft??

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Question 851279: Whats the lenth of a diagonal of a rectangle when the sides are 6ft and 3ft??
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
When there is a right angle, a^2 + b^2 = c^2 where a and b are the sides and c is the hypotenuse.
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In a rectangle, it's two triangles put together.
The equation is:
6^2 + 3^2 = x^2
36 + 9 = x^2
45 = x^2
6.708 = x