I’m a little confused by the question and the problem, is there a picture of the problem you could add?
Principal P = $500, Rate = 3 % = 3/100 = 0.03 would assume per year,
Time t = 6 months = (6/12) year = 0.5 year.
Simple Interest, I = P*r*t
= 500*0.03*0.5 = 7.5
And so therefore your answer is 7.5
It can never be a square.
The missing word for this sentence is common
Have A Good Day :)
