Question

the size of a rectangular computer monitor is determined by the length of its diagonal. If a computer monitor has a length of 24 inches and a height of 18 inches what is the length of its diagonal to the nearest inch

Answer 1

Use Pythagorean theorem
18^2 + 24^2 = 900
root 900 and you will get 30in
30in is the answer.

Answer 2

The length of its diagonal is 30 inches.

Explanation:

Since, the diagonal of a rectangle is,

`d=√(l^2+w^2)`

Where, l is the length of the rectangle,

w is the width or height of the rectangle,

Here, l = 24 inches,

w = 18 inches,

Hence, length of the diagonal of the given computer monitor is,

`d=√(24^2+18^2)`

`=√(576+324)`

`=√(900)`

`=30\text{ inches}`