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Cassie’s computer monitor is in the shape of a rectangle. the screen on the monitor is 11.5 in. high and 18.5 in. wide. what is the length of the diagonal? round to the nearest tenth of an inch.

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nelsonp33
ANSWER 21.78 / about 28       a^2 +b^2 = c^2 so 11.5^2+18.5^2 =474.5 which the square root is 21.78

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