Question

The size of a laptop monitor is usually measured along the diagonal. A rectangular monitor is 12 inches long and 7 inches tall.



What is the length of the diagonal of this monitor, to the nearest tenth of an inch?



**do i just multiply them**
Ms. Sue
No. This is like finding the hypotenuse of a right triangle.

a^2 + b^2 = c^2

7^2 + 12^2 = c^2

NO!!!
hypotenuse
sqrt(12^2+7^2)
= sqrt(144+49)
i got 14 is this correct
Ms. Sue
That's the nearest whole number. The length is close to 13.9

close. I get 13.89244399
which to the nearest tenth as requested is
13.9 inches

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