A rectangle has a width of 54 centimeters and a perimeter of 228 centimeters. What is the rectangle's length?

Step 1 ：We are given a rectangle with a width of 54 centimeters and a perimeter of 228 centimeters. We are asked to find the rectangle's length.

Step 2 ：The perimeter of a rectangle is given by the formula \(2*(length + width)\). We know the width and the perimeter, so we can rearrange the formula to solve for the length. The rearranged formula is \(length = (perimeter/2) - width\).

Step 3 ：Substituting the given values into the formula, we get \(length = (228/2) - 54\).

Step 4 ：Solving the equation, we find that the length of the rectangle is 60 centimeters.

Step 5 ：Final Answer: The rectangle's length is \(\boxed{60}\) centimeters.