SOLUTION: What is the length of the diagonal of a 5-inch (in.) by 12-inch photograph

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Question 596107: What is the length of the diagonal of a 5-inch (in.) by 12-inch photograph
Answer by Yemi(10) About Me  (Show Source):
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Use pythagoras theorem and you have the length of the diagonal to be 5 squared + 12 squared which will be 25+144=169.so the length of the diagonal will be the square root of 169 which is 13.