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khemphill4118
18.07.2020 •
Mathematics
What is the length of arc FE?
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Ответ:
4.42
Step-by-step explanation:
Angles A and C are identical because the two circles are similar.
The arc length formula is s = rФ, where r is the radius and Ф is the central angle.
If we know s and r, then the central angle Ф is s/r, or, in this case,
Ф = 8.84/5.
Now let's find the length of the arc EF: s = rФ becomes:
s = (2.5)(8.84/5) = 4.42
Ответ:
2
Step-by-step explanation: 6 + (-4) = 6 - 4 = 2