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zlopas [31]
3 years ago
6

PLEASE ANSWER I NEED DONE

Mathematics
2 answers:
dezoksy [38]3 years ago
5 0

Answer:

The other answer is wrong.  It is r^2/R^2.

Step-by-step explanation:

Troyanec [42]3 years ago
3 0
The picture in the attached figure

we know that
area of a sector=(∅/2)*r²--------> when ∅<span> is in radians
</span>
area of sector inner circle=(∅/2)*r²

area of sector outer circle=(∅/2)*R²-(∅/2)*r²

<span>The ratio of the area of the sector removed from the outer circle to the area of the sector removed from the inner circle is
</span>[(∅/2)*R²-(∅/2)*r²]/[(∅/2)*r²]-----> [R²-r²]/[r²]

therefore

the answer is
<span>(R^2 - r^2)/r^2</span>

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