Question

The diameter of a circle is 4 miles. What is the circle's circumference?

Answer 1

C ≈ 12.56 mi

General Formulas and Concepts:

Pre-Alg

• Order of Operations: BPEMDAS

Geometry

• Diameter: d = 2r
• Circumference: C = 2πr

Explanation:

Step 1: Define

d = 4

Step 2: Find Circumference

1. Rewrite formula: C = πd
2. Substitute: C = 4π
3. Evaluate: C ≈ 12.56