Ican’t figure out way to solve this, couldn’t find anyone for explain

What is the circumference of a circle with an area of 50.24 cm²?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Sun country bus lines has 80000 shares of stock outstanding what would the dividend per share of stock be from a dividends declaration of 109600