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madreJ [45]
3 years ago
6

..............................

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
3 0

Answer:

403 + 40\sqrt{3}~~ ft^2

Step-by-step explanation:

(20+\sqrt{3})(20+\sqrt{3}) = 20^2 + 2\cdot 20 \cdot \sqrt{3} + \sqrt{3}^2 = 400 + 40\sqrt{3} + 3 = 403 + 40\sqrt{3}

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