<p>I have a question on this problem (I've had many questions today...)</p>
<p>satpg76#14</a> | Flickr - Photo Sharing!</p>
<p>I just get getting 6pi no matter what I do...I'm probably missing something completely obvious.</p>
<p>Thanks for all your help!</p>
<p>The answer is 12pi. if the radius of the smaller circles is 3 then the circumference of one of the smaller circles is six (PI x Diameter = circumference). Since we are counting half of circumference of each small circles its the same as the circumference of one whole small circle. so so far we are at 6pi. Now on to the bigger circle the diameter of the big circle is 12 (3x4). So the circumference of the big circle is 12pi. but we are only counting half the circumference of the big circle, so thats 6pi. add that 6pi to the earlier 6pi and you get 12 pi!!!</p>
<p>The answer is 12pi. if the radius of the smaller circles is 3 then the circumference of one of the smaller circles is 6pi (PI x Diameter = circumference). Since we are counting half of the circumference of each small circles its the same as the circumference of one whole small circle. so far we are at 6pi. Now on to the bigger circle. the diameter of the big circle is 12 (3x4). So the circumference of the big circle is 12pi. but we are only counting half the circumference of the big circle, so thats 6pi. add that 6pi to the earlier 6pi and you get 12 pi!!!</p>
<p>made some typos the first time so i corrected em. hope that helps</p>
<p>what is the correct answer? Just wondering…(if 12pi really is correct?)</p>
<p>Thank you!</p>
<p>I realize that I wasn’t counting as many pieces as I should have as I thought that they had already been accounted for.</p>
<p>And yes, 12pi is the correct answer</p>