Circles (area)

Apply the formula for the area of a circle (mixed r and d)

Calculate the area of each circle using 3.14 as pi. Round your answer to the nearest thousandths place when necessary. Do not round throughout the problem.

diameter:
\(31.2 \; \mathrm{yd}\)

Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle.