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3 years ago

6

The diagram below shows a square inside a regular octagon. The apothem of the octagon is 18.11 units to the nearest square unit

what is the area of the shaded region

1 answer:

DedPeter [7]3 years ago

6 0

Answer:

862

Step-by-step explanation:

apex

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Answer:

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Step-by-step explanation:

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Evaluate the double integral ∬R(2x−y)dA, where R is the region in the first quadrant enclosed by the circle x^2+y^ 2= 4 and the

frez [133]

Answer:

Step-by-step explanation:

We are to integrate the function

$f(x,y) = 2x-y$

over the area enclosed by the circle

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$dA=rdr dt$

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$2x-y =2rsint-rcost$

Double integral will become now

$\int\limits^\frac{\pi}{4} _0 \int\limits^2_0 2rcost -rsint dt\\=\int\limits^\frac{\pi}{4} _0 r^2 cost -r^2sint /2 dt\\= r^2 sint - r^2 cost/2$

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Substitute for r and t

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Answer:

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Step-by-step explanation:

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