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

Explanation

Radius of the circle r = 3.12 m
Area of the circle A = ?
`A=pir^(2)=3.14 times 3.12 times 3.12=30.566016`
According to the rule of significant fig,
`A=30.6m^(2)` [Given data has three sig. fig.]