SOLUTION: a rectangular photograph has side lengths of7 inches and 13 inches. To the nearest inch,how long is the diagonal of the photogragh?

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Question 878543: a rectangular photograph has side lengths of7 inches and 13 inches. To the nearest inch,how long is the diagonal of the photogragh?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
a%5E2 + b%5E2 = c%5E2 where a and b are sides of a right triangle, and c is the hypotenuse.
You're given the 2 sides.
7 squared + 13 squared = c squared
49 + 169 = c squared
218 = c%5E2
Take the square root of each side
c = 14.76482
Rounded to the nearest inch, c = 15"