The diameter of a circle is 16.8 cm . What is the circumference of the circle? Give your answer to 1 d.p.

To find the circumference of a circle, you can use the formula \( C = \pi \times d \), where \( d \) is the diameter. Given that the diameter is 16.8 cm, you can calculate it as follows: \( C = \pi \times 16.8 \approx 52.8 \) cm when you round to one decimal place. Fun fact: The value of \( \pi \) is approximately 3.14, but it actually has an infinite number of digits and goes on forever! Ancient civilizations like the Egyptians and Babylonians had their versions of \( \pi \), making it a number that's been loved and calculated for thousands of years. Did you know that knowing the circumference helps in so many real-world scenarios? For example, when designing a circular park, builders need to calculate the fencing required, or when crafting a circular pizza, pizzerias rely on this number to determine the right amount of dough to prepare. What a delicious way to apply math!