Question

The radius of the circle is 3.12 m.
Calculate the area of the circle with regard
to significant figures. Ans: (30.6 m)​

Answer 1

Explanation:

we know,

area of a circle= π r^2

substituting respective values , we get

area of circle= 3.14×( 3.12)^2

=3.14×9.73

=30.55m^2

=30.6m^2