The formula for the area of a circle is πr^2 r means radius. If the radius is 5, then r = 5. This means the equation for the area is π(5)^2 π is about equal to 3.14. So we can replace π with 3.14. (3.14)(5)^2 According to the order of operations, the first step to solve this is to do 5^2, which is exponents. 5^2 = 25 Next, multiply. 25 • 3.14 = 78.5 So the area of the circle with a radius of 5 is approximately 78.5 square units.
