Question

Which has a larger area left out cutting 9circles each of radius 7cm from a square of side 42cm

Answer 1

area of the square=(side)2
" ". ". ". =(42)2

=1864
area of circle=πr2
=22/7*7*7

=154
area of 9 circle=9*154
=1386


then ,area of left out= area of square -area of 9circle
area of left out=478
hence,area of 9circle>area of left out