Question

The radius of the circle is 3.12 m.
Calculate the area of the circle with regard
to significant figures.
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Answer 1

Answer:

the area is 30.566 sqm by

area of circle is pi r square

Answer 2

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