SOLUTION: A rectangle is 4 inches wide and 9 inches long what is the length of a diagonal of this rectangle to the nearest tenth of an inch

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Question 264858: A rectangle is 4 inches wide and 9 inches long what is the length of a diagonal of this rectangle to the nearest tenth of an inch
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
this is actually a triangle quaestion as the diagonal line is the hyponuse of the triangle.
A%5E2%2BB%5E2=C%5E2
A=4
B=9
find C
4%5E2%2B9%5E2=C%5E2
16%2B81=C%5E2
97=C%5E2
sqrt%2897%29=sqrt%28C%5E2%29
9.8488=C or sqrt%2897%29=C%29%0D%0ARound+to+the+tenth%0D%0A%7B%7B%7B9.8=C the diagonal 9.8 inches long
check answer:
A%5E2%2BB%5E2=C%5E2
4%5E2%2B9%5E2=%28sqrt%2897%29%29%5E2
16%2B81=97
97=97