If the four equal circles of radius 3 cm touch each other externally, then the area of the region bounded by the four circles is

If the four equal circles of radius 3 cm touch each other externally, then the area of the region bounded by the four circles is
1). $4(9-\pi)$ sq. cm.
2). $9(4-\pi)$ sq. cm.
3). $5(6-\pi)$ sq. cm.
4). $6(5-\pi)$ sq. cm.

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