Zen X.

asked • 02/20/17

Three coins

Three coins are placed on a table such that they just touch each other. The diameters of the coins are 1.8cm, 2.2cm, and 3 cm. Solve the triangle where vertices are the centers of the coins.

1 Expert Answer


Kenneth S. answered • 02/20/17

4.8 (62)

Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018

Zen X.

Which would start with 1.1+1.5 cm, 1.1+0.9 cm?


Kenneth S.

Yikes!   if you have drawn the three tangent circles, then joining the centers, you should see that each side of the triangle has length that is the sum of the radius of two circles.  Make the drawing, study it, and THINK!


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