anonymous
  • anonymous
In the rectangle below, the two quarter-circles are congruent. Find the area of the shaded region. If necessary, round your answer to two decimal places.
Geometry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1 Attachment
dumbcow
  • dumbcow
shaded = Rect - 2*sector radius = 6 rectangle is 6 by 12
Jack1
  • Jack1
*circle, my bad (corcle is not a word...yet)

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Jack1
  • Jack1
so how'd u go?
Jack1
  • Jack1
* dammit fat fingers again * meant to be: so area of rectangle minus 1/2 area of circle = area of shaded part
Jack1
  • Jack1
area of the rectangle = L x W area of the circle = pi r ^2 L = 2r W =r r = 6
anonymous
  • anonymous
Sorry i was getting orange juice -__ -
Jack1
  • Jack1
all good
anonymous
  • anonymous
Would it be units squared ?
anonymous
  • anonymous
or just units
Jack1
  • Jack1
squared (area always measured in units sqrd)
anonymous
  • anonymous
So would my answer is 6 ?
anonymous
  • anonymous
Oh no your saying r = 6 dumb me.
anonymous
  • anonymous
113.04
Jack1
  • Jack1
i got a much lower answer
Jack1
  • Jack1
Area of rectangle = ?
anonymous
  • anonymous
Wow i would do the area of a circle for a rectangle.
anonymous
  • anonymous
12 ahaha
anonymous
  • anonymous
use *
Jack1
  • Jack1
area of rectangle = L x W = 2r x r = 12 x 6 = 72
Jack1
  • Jack1
area of circle = pi x r^2 = pi x 6^2 = 36pi
anonymous
  • anonymous
Isn't 72 too much ? :o
Jack1
  • Jack1
it's a quarter circle, it's dimensions have to be 2r x r (rectangle)
Jack1
  • Jack1
so (area of rectangle) minus (1/2 * (area of circle) = area of shaded part
anonymous
  • anonymous
I forgot never question a mentor, i see why (:
Jack1
  • Jack1
no, dude question EVERYTHING! is a rule to live by, trust me
Jack1
  • Jack1
its how you learn and how you stop ppl getting away with stuff
Jack1
  • Jack1
ie abuse of power IRL
anonymous
  • anonymous
I'll take your word for it since you are more wise
Jack1
  • Jack1
so how'd u go with ur area? jew get a final answer?
anonymous
  • anonymous
Your kidding, 72 wasn't the final answer ?
anonymous
  • anonymous
Well there goes getting that answer right.
Jack1
  • Jack1
....? so (area of rectangle) minus (1/2 * (area of circle) = area of shaded part 72 was just area of rectangle
Jack1
  • Jack1
sorry dude, will use pics next time
anonymous
  • anonymous
I do my homework online so i automatically got it wrong. ahaha
Jack1
  • Jack1
damn
anonymous
  • anonymous
It's fine though, it doesn't matter.
Jack1
  • Jack1
ok, just incase you can request a do over, i got 15.451 as my answer for the shaded part
anonymous
  • anonymous
No really it's fine if i get over a certain percent i pass, should i stress that i need to do 3 more units before monday ? I'm asking because you're experienced :D

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