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The radius of the circle is 3.12 m. Calculate the area of the circle with regard to significant figures.

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The radius of the circle is 3.12 m. Calculate the area of the circle with regard to significant figures.

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Given: 

radius : 3.12 m (Three significant figures)

Area of the circle = πr2 = 3.14 × (3.12 m)2 = 30.566 

If the result is rounded off into three significant figure, area of the circle = 30.6 m2

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