Home > MC2 > Chapter 9 > Lesson 9.1.3 > Problem 9-31
9-31.
Use the formulas for the area and circumference of a circle:
Area: π · r 2
Circumference: π · 2r or π · d
Area = π (8.5)2 = 72.25π ≈ 226.98 mm2
Use the formulas for the area and circumference of a circle:
Area: π · r 2
Circumference: π · 2r or π · d
Area = π (8.5)2 = 72.25π ≈ 226.98 mm2