The perimeter of a round flowerbed is 18.84 meters. How many square meters is the area of the flowerbed? One of the students in the above question is like this. (18.84 △ 2) × (18.84 △ 3.14 △ 2). Is he right? Please explain the reason
Yes, the final answer of your friend's formula is correct, but the meaning is not clear
Perimeter = 2 π R
Area = π R & sup2;
R=18.84÷(2×3.14)=3
Area = π R & sup2; = 3.14 × 3 & sup2; = 28.26
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