The diameter of a circular flower bed in the park is 60 meters. What is the area of this flower bed? If a potted flower covers an area of about 1 / 10 square meters, how many thousands of potted flowers should be placed in this flowerbed? (the total number is ten thousand)
3.14 × (60 △ 2) 2 = 2826 (square meters) 2826 △ 110 = 28260 ≈ 30000 (POTS) a: the area of this flowerbed is 2826 square meters. This flowerbed needs about 30000 pots of flowers
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