Question

Question #7d6b2

Answer 1

Given radius of each circle `r=2.25/2"inch"`

It is obvious from the figure that each side of the equilateral triangle is
`a=4r+2rcot30^@`
`=4xx2.25/2+2xx2.25/2sqrt3` inch

`=(4.5+2.25sqrt3)=2.25(2+sqrt3)` inch