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The area of sector AOB is 20.25 ft2. Find the exact area of the shaded region.

Mathematics
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1 Attachment
A. (20.25- 40.5 ft2 B. (20.25 - 81) ft2 C. ( 20.25 - 40.5 2 ) ft2 D. none of these
|dw:1360004880244:dw|

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Other answers:

Subtract the area of the right triangle from the given area of the sector and you will get the shaded area (known as segment of a circle). What is the area of the right triangle? @dietrich_harmon
?B
81 is not the area of the triangle. Try again.
it gonna be A or c
A
What is the area of the triangle? A = (1/2) b*h so ..
C
c) looks sketchy with C. ( 20.25 - 40.5 2 ) ft2 If the area is 40.5, what is that extra 2 doing there? @dietrich_harmon
i go with c then thanks
Alrighty, then.
All of these options --> . (20.25- 40.5 ft2 B. (20.25 - 81) ft2 C. ( 20.25 - 40.5 2 ) ft2 give negative areas. Area is not negative so that leaves one option.
D then @Directrix
Yes, this was a good "tricky" question. We should have picked up on that negative business but better late than never. :)
thank u

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