The diameter of the larger circle is 12.5 cm.
The diameter of the smaller circle is 3.5 cm.

What is the approximate area of the shaded region?

A.
28.26 cm²

B.
113.04 cm²

C.
132.27 cm²

D.
254.34 cm²

Question

The diameter of the larger circle is 12.5 cm. 
The diameter of the smaller circle is 3.5 cm. 

What is the approximate area of the shaded region?
  

 
 A.
28.26 cm²
 
 B.
113.04 cm²
 
 C.
132.27 cm²
 
 D.
254.34 cm²

anonymous · Answer

http://static.k12.com/calms_media/media/1419000_1419500/1419370/1/67fbfc4137bd1b8da05796451fba13e634b81ba2/MS_PA_130922_171141.jpg

anonymous · Answer

@amberosales @fbi2015 @freegirl112 @iGreen

igreen · Answer

Find the areas of the two circles and subtract.

igreen · Answer

$A = \pi r^2$

igreen · Answer

Divide the diameters by 2 to find the radius's.

12.5 / 2 = 6.25
3.5 / 2 = 1.75

igreen · Answer

Larger circle:

$A = (3.14)(6.25^2)$

Smaller circle:

$A = (3.14)(1.75^2)$

Simplify and subtract.

anonymous · Answer

so it would be b? @iGreen

anonymous · Answer

@iGreen @iGreen @iGreen

igreen · Answer

Yep, you got it.

anonymous · Answer

thanks :) @iGreen

igreen · Answer

No problem, happy to help $\Huge\ddot\smile$