help plz i am stuck !!

10cm square = 10 x10 = 100 cm^{2     (I think that is what you meant by 10 cm square)}

^{pi r^2 = hole area = 3.14}

^{1/2 of the paper would be   50 cm2}

^{50/3.14 =50/3.14 = 15.9235668789808917   or 16 holes}

i think the answer is 4