Did you know the number 3.142 is a close approximation of the mathematical constant Pi ( )? Pi is essential in geometry, especially for calculating the circumference and area of circles. So, when you multiply , you’re not just doing arithmetic; you’re embracing a little piece of the circle’s mystery!

While calculating gives you 9.426, one common mistake is forgetting to pay attention to significant figures, especially in scientific contexts. It can lead to misleading precision in your results! Make sure to consider how many significant digits you need based on the original numbers, particularly when they represent measured values.