Circumference (rounding)
Your gonna need to round to the nearest tenth to find the answer.

18.22124 (18)

Step-by-step explanation:

The percentage change is approximately 61%

Step-by-step explanation:

In this question, we are asked to calculate the approximate percentage change if the new number is more than the old number by a certain amount.

Mathematically;

Percentage change = (new number - old number)/old number * 100%

Now, from the question, we can identify that the new number is 550 , then the old or original number will be 550-200= 330

Let’s plug these values in the equation;

% change = 200/330 * 100%

% change = 60.61%