To calculate the Ring Size:
\[ R = \frac{(C \times 10 - 40)}{4} \]
Where:
Ring size is a measurement used to denote the circumference or diameter of a ring. It is typically measured in millimeters or inches and is used to ensure that a ring fits comfortably on a person’s finger. Ring sizes can vary based on regional standards, but the most common systems include the US, UK, and European sizing charts. Knowing your ring size is essential when purchasing rings, especially for special occasions such as engagements or weddings.
Let's assume the following values:
Step 1: Use the formula:
\[ R = \frac{(5.5 \times 10 - 40)}{4} = 2.5 \]
The ring size (R) is 2.5.