Question 765813
Area of rectangular piece of material
= 45 * 24 = 1080cm^2
Area of hole = Pi*r^2
= 19.64cm^2
Area left after circle removed:-
1080 - 19.64 = 1060.36cm^2
Percentage of total area = 19.64/1080 * 100
= 1.8% is removed.
Hope this helps.
:-)