You would have to use the quadratic formula because it’s not a perfect square
Answer:
In mathematics, the magnitude or size of a mathematical object is a property which determines whether the object is larger or smaller than other objects of the same kind. More formally, an object's magnitude is the displayed result of an ordering ( or ranking ) - of the class of objects to which it belongs.
Your question is vague. There is not enough information. How many balls are in the box? 15 boxes would cost 109.80 thought.