North Carolina Standard Course of Study
Solve real-world and mathematical problems involving angle measure, area, surface area, and volume.
NC.7.G.4. Understand area and circumference of a circle.
NC.7.G.4.a. Understand the relationships between the radius, diameter, circumference, and area.
NC.7.G.4.b. Apply the formulas for area and circumference of a circle to solve problems.