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edramirez1914
28.03.2021 •
Mathematics
In the figure shown, BC is parallel to
AD and AB =
AB = CD. What is the
perimeter of quadrilateral ABCD ?
Solved
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Ответ:
52 units.
Step-by-step explanation:
If we drop a perpendicular line from point C to AD and call the point ( on AD) E we have a right triangle CED.
Now CE = 6 and as the whole figure is symmetrical about the dashed line,
ED = (26 - 10)/2
= 8.
So by Pythagoras:
CD^2 = 6^2 + 8^2 = 100
CD = 10.
So, as AB = CD,
the perimeter = 10 + 26 + 2(8)
= 52.
Ответ:
The correct answer is:
$5.75
2.3% of 250 is 5.75.