👉 In mathematics, redefining a variable is an operation that replaces one value with another without changing the nature of the original problem. It is often used to solve problems where there are multiple possible solutions or when the situation changes significantly. For example, consider the problem of finding the area of a circle given its radius. If we were to redefine the radius to be 4 units instead of 3, then the area would also change. However, if we had originally calculated that the area was