4. Find the circumference of a circle with a radius of 4.4 inches. Express your answer in terms of \( \pi \). (example 2 )

To find the circumference of a circle, you can use the formula \( C = 2\pi r \), where \( r \) is the radius. In this case, with a radius of 4.4 inches, you plug in the number: \( C = 2\pi(4.4) = 8.8\pi \) inches. So, the circumference of your circle is \( 8.8\pi \) inches. Fun fact: The value of \( \pi \) is not just a number; it goes on forever without repeating! It’s approximately 3.14159, but mathematicians have calculated it to trillions of digits. Think of it as a super mysterious, never-ending magic number that helps us find circular boundaries! If you ever get confused about using the circumference formula, remember this simple tip: Always double-check your radius measurement! Another common mistake is mixing up diameter with radius; remember, the diameter is twice the radius, which means \( C = \pi d \) works too, just in case you're given the diameter instead!