Solution:
Given that the three circles are drawn such that each of them touches the other two.
Now, by joining the centers of the three circles,
We get, AB = BC = CA = \[2\] (radius) = \[7\] cm
Therefore, we can say that triangle ABC is an equilateral triangle with each side \[7\] cm.
∴ Area of the triangle of side a = \[(\sqrt{3}/4)\times {{a}^{2}}\]
= \[(\sqrt{3}/4)\times {{7}^{2}}\]
= \[(49/4)\sqrt{3}\] \[c{{m}^{2}}\]
= \[21.2176\] \[c{{m}^{2}}\]
Now, we know that Central angle of each sector = \[\phi ={{60}^{\circ }}(60\pi /180)\]
= \[\pi /3\] radians
Thus, area of each sector = \[(1/2){{r}^{2}}\theta \]
= \[(1/2)\times {{(3.5)}^{2}}\times (\pi /3)\]
= \[12.25\times (22/(7\times 6))\]
= \[6.4167\]\[c{{m}^{2}}\]
Therefore, Total area of three sectors = \[3\times 6.4167\] = \[19.25\] \[c{{m}^{2}}\]
so, the Area enclosed between three circles = Area of triangle ABC – Area of the three sectors
= \[21.2176-19.25\]
= \[1.9676\] \[c{{m}^{2}}\]
Therefore, the required area enclosed between these circles is \[1.9676\] \[c{{m}^{2}}\]