Score: \( 4 / 5 \) Penalty: none Question The diameter of a circle is 123 cm . Find the circumference to the nearest whole number.

To find the circumference of a circle, you can use the formula \( C = \pi d \), where \( d \) is the diameter. With a diameter of 123 cm, this means \( C \approx 3.14 \times 123 \). Calculating that gives you \( C \approx 386.22 \) cm. When rounded to the nearest whole number, the circumference is \( 386 \) cm! For a fun twist, did you know that the calculation of pi (π) has intrigued mathematicians for centuries? It appears in formulas all over math, physics, and even nature! Plus, pi is irrational, which means it goes on forever without repeating—talk about number commitment! If you're looking to apply this in real life, consider measuring the circumference of circular objects around your home, like plates or lids! Just remember that a precise measurement of the diameter is key to getting an accurate circumference. Plus, it’s a fun geometry exercise to practice comparing sizes!