Mathematics: The aspect ratio (length to width) of an lcd computer monitor is 5 : 4. the lcd monitor of a toshiba laptop computer has a perimeter of 32.4 inches. what is the diagonal measure of the screen? round to the nearest tenth of an inch.

The aspect ratio (length to width) of an lcd computer

ywontu53

12.03.2022

Solution:

Formula of perimeter = 2(W+H)

So, 2W + 2H = 32.4 ... (1)

Ratio = 5:4

So, $\frac{W}{H} =\frac{5}{4}$

4W - 5H = 0 ... (2)

Solve equation (1) and (2).

W = 9.0 and H = 7.2

Use the Pythagorean theorem,

$W^{2} + H^{2} = D^{2}$

$D^{2} = (9.0)^{2} + (7.2)^{2}$

$D^{2} = 132.84$

D = 11.52

D = 11.5

Hence, the measure of diagonal is 11.5 inches.

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mar4894

27.02.2023

the answer is 28

Step-by-step explanation:

14+14=28

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