Analyzing the Circle of Life

Image retrieved from here.

     The circle is one of my favorite shapes. I enjoyed remembering how I learned to find the circumference and area of circles as a teen while I watched the lesson online for my math class his week. I enjoy algebra, and plugging numbers into formulas to find answers gives me a feeling of satisfaction. Knowing that, it is only reasonable that I would enjoy the concrete process of finding area and circumference of circles.

Image found here.

      I'll begin with the circumference of the circle. The circumference is the measurement of the curve that makes the circle. To find the circumference of a circle, we use the equation C=2πr, where r is the radius or distance from the center of the circle to any point on the perimeter. This means if we have a circle with a radius of 5, our circumference will be 10π.

     When we look for the area of the circle, we are measuring the space contained within the perimeter of the circle. We find this information with the equation A=πr². This means if we are going to find the area of the circle we worked with above, with a radius of 5, we will end up with an area of 25π.

Just in case you need help remembering the formulas for circumference and area of a circle, you will never forget this catchy tune!