KEAM 2021 Physics and Chemistry Solved Paper

Given, radius, r=1.05m
Area of circular plate,
A=πr2
=3.14×1.05×1.05
=3.46185m2
According to the rule of significant figures for multiplication, the final result should retain the least significant figures as given in the various numerical values.
So, area upto correct significant figures is 3.47m2.