Question 429088
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Hi
george wants to string lights along one diagonal of his rectangular window, 
length of 4 feet and a width of 3 feet
Using the Pythagorean Theorem:  a^2 + b^2 = c^2
 diagonal = {{{ sqrt(4ft^2 + 3ft^2) = sqrt(16ft^2 + 9ft^2) = sqrt(25ft^2) = 5ft}}}