Three circles of radius 1 are drawn, each tangent to each other. Find the radius of the large circle.

Guest May 8, 2020

#1**+1 **

Sorry mate but I don't know how to help.

One thing you could do is:

- Draw an equilateral triangle in the middle (each point connecting to the centre of the small circles)

--> The length of the triangle sides would = 2

- Use this formula to find the distance from the vertices of the triangle to the centre:

--> https://www.quora.com/What-is-the-distance-between-the-centre-of-an-equilateral-triangle-and-any-of-its-vertices

- + 1 (length of the radius)

Hope this helps (pretty sure this is not the way to go about it but it logically works)..

:) <3

MathsLlama May 8, 2020