Circumference (π = 3.14)

Circumference and area · Measurement

Use π to find circumference and area, first with 3, then with 3.14.

This is step 2 of unit 5, “Circumference and area”, in Stage 7: Dividing fractions and decimals, ratio and percent, circles and volume (ages 13). A round has 10 problems; 90% or better earns three stars. Everything is free with no sign-up, and your stars and XP are saved on this device.