To calculate the length of a steel ring that fits around a pipe with a diameter of 5 centimeters, you can use the formula for the circumference of a circle:
\[ C = \pi \times d \]
where \(C\) is the circumference, and \(d\) is the diameter.
Plugging in the value for the diameter:
\[ C = \pi \times 5 , \text{cm} \]
Using the approximate value of \(\pi \approx 3.14\):
\[ C \approx 3.14 \times 5 , \text{cm} \approx 15.7 , \text{cm} \]
So, the steel ring needs to be approximately \(15.7\) centimeters long to fit around the pipe.
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