Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.a = 1, b = 7
A. c = 
; c ? 2.828
B. c = 
; c ? 6.928
C. c = 8
D. c = 
; c ? 7.071
Answer: D
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