Posted by Brittany on Sunday, April 25, 2010 at 10:34pm.
Three circles are externally tangent to one another. The radius of each of the circles is 2 cm. A belt fits tightly around the three circles. Find the length of the belt. Express your answer in terms of pi with an explanation.

geometry  Brittany, Sunday, April 25, 2010 at 10:56pm
πd is the circumference of a circle, so with a diameter of 4 a single circle has a circumference of 4π. 1/3 of each circle is in contact with the belt, so that total part is still 4π. Then, the part of the belt connecting from tangent to tangent is 2 radii, so 3 areas is 12. The belt would then be 12+4π cm.

geometry  Anonymous, Sunday, May 12, 2013 at 9:56pm
Click the correct answer.
Listen
3.
Which is greater, the circumference of a circle with radius 3 ft, or the distance around a semicircle with diameter 16 ft? By how much?
A. circle, by 4 ft
B. circle, by 2 ft
C. semicircle, by 4 ft
D. semicircle, by 2 ft

geometry  Anonymous, Saturday, April 2, 2016 at 4:57pm
d
Answer This Question
Related Questions
 PLEASE HELP TANGENTS AND CIRCLES PROBLEM GEOMETRY  PLEASE HELP I REALLY NEED ...
 Math. I really don't get this question  three circles are manually tangent ...
 GEOMETRY  Two circles with radii a and b touch each other externally . Let c be...
 geometry  Each of the three circles have a radius of 10. The line OA contains ...
 Geometry  Circles and tangents  Two circles of radius 1 are externally tangent...
 Trig  Three circles with radii of 4, 5, and 6 cm, respectively, are tangent to ...
 geometry!!!!!!!!!!  Three circles, each with a radius of 10, are mutually ...
 geometry  Three circles, each with a radius of 10, are mutually tangent to each...
 math  three circles are externally tangent to each other. The radius of each ...
 maths  there are two circles touching each other at one point. The radius of ...
More Related Questions