<u>Formula:</u> I'm not sure what formula this chart is asking for. But assuming it's the formula for circumference that would be 2πR (2 times pi (3.14) times the radius). If this isn't the formula the chart is looking for let me know what formula you need and I'll try to help you out with that
<u>Circumference:</u> 2pi Radius=2(3.14)8=50.24 cm
An algebraic equation is an equation used in algebra which uses numbers and letters. The letters are representing unknown numbers and are called variables.