find the area of a circle who's diameter is 2.8cm..?
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Area of circle = πr^2
Therefore, diameter = 2.8 cm
so, radius = 2.8/2 = 1.4
\frac{22}{7} \times 1.4 \times 1.4 = 6.16
7
22 ×1.4×1.4=6.16
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