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gabbyalicorn
 one year ago
The diameter of the larger circle is 20.4 cm.
The diameter of the smaller circle is 10.8 cm.
What is the approximate area of the shaded region?
A.
326.7 cm²
B.
289.4 cm²
C.
235.1 cm²
D.
72.3 cm²
gabbyalicorn
 one year ago
The diameter of the larger circle is 20.4 cm. The diameter of the smaller circle is 10.8 cm. What is the approximate area of the shaded region? A. 326.7 cm² B. 289.4 cm² C. 235.1 cm² D. 72.3 cm²

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gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0https://www.dropbox.com/s/nu37d4qt54hihf3/Screenshot%2020150609%2014.32.43.png?dl=0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[Area~of~larger~circleArea~of~smaller~circle\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0find the area of both circles, then subtract the small circle form the big one

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0oh i kinda maybe sorta get this 1 so 20.4 x 3.14 10.8 x 3.14 then u sutract the 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you remember the area of a circle formula? We've gone over it twice now

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.064.056  33.912 and yes A= π x r ^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And you know that \[\Large Radius=\large \frac{1}{2}Diameter\] right?

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0√ = radius= 1/2 diameter

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\sqrt{}=\color{aqua}r\color{red}a\color{blue}d\color{green}i\color{yellow}u\color{brown}s?\]

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0long story short i was saying right but witch a check mark ^u^

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh. I was wondering what sqrt's had to do with it.

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0sorry, for the confusion

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Anyways, the questions give us the diameters. We have to halve those to get the radius so that we can plug into the area of a circle equation.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[(\pi*\frac{20.4}{2}^{2})(\pi*\frac{10.8}{2}^{2})\] is our overall equation for this problem.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Divide before squaring though

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0653.3712  183.1248 = 470.2469

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Divide BEFORE squaring. 20.4/2 = 10.2. 10.2^2=?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now repeat the process for 10.8

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0so 91.5624  29.16 = 62.4024

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Come on man. Look at my very first reply in the thread

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0I was wrong sorry

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.091.5624 366.2496

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0oh :/ sorry. 235 C
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