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Jack is out shopping for a new computer monitor. His desk includes built-in cabinets with a rectangular opening for a monitor that is 19 inches wide by 16 inches high. When measured diagonally, which of the following is the largest screen size that will fit on Jack's desk?

A. 9 inches

B. 17 innches

C. 21 inches

D. 26 inches

**Comments**

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from pythagoras theroem,

x^{2} = 19^{2} + 16^{2}

x^{2} = 617

x = 24.84 inches

Therefore, the largest screen size that will fit on Jack's desk is 21 inches

**Answer: C**

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