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Question: 12 five tangential circles of equal radi are arranged in...

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12. Five tangential circles of equal radi are arranged in the figure shown. If you connect the centers of the four corner circles, you will form a square with a side measuring 2 cm. What is the arca occupied by the central circle? 2 3 2 d. 2 13. Last Monday, a goat, tied by a rope 25 feet long is tied to a pole at the northwest corner of a square lot measuring 50 ft. on all sides grazes over as much grass as possible. On Tuesday, it was ticd on the southwest corner; Wednesday, on the southeast corner; and Thursday, on the northeast corner. How much arca of the lot remain untouched after the four days? a. 365.3 ft? b. 563.5 fi2 c. 536.5 ft d. 527.5 ft

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