Ohio Learning Standards
Solve real-life and mathematical problems involving angle measure, circles, area, surface area, and volume.
7.G.4. Work with circles.
7.G.4.a. Explore and understand the relationships among the circumference, diameter, area, and radius of a circle.
7.G.4.b. Know and use the formulas for the area and circumference of a circle and use them to solve real-world and mathematical problems.