Johny won a laptop in a school
Raffle. The laptop screen measures
10 inches in height and 24 inches in
Width. Find the diagonal length of
the laptop screen.
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Given:
Height of the laptop screen = 10 inches
Width of laptop screen = 24 inches
To find:
The diagonal length of the laptop screen.
Solution:
Since the laptop screen is a rectangle, the angle between each sides will be 90° hence we can use the Pythagoras Theorem:
Let the length of the diagonal be d:
d² = (width of screen)² + (height of screen)²
d² = 24² + 10²
d² = 576 + 100
d² = 676
Taking under root on both sides:
d = 26
Therefore the length of the diagonal of the laptop screen will be 26 inches.
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