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Home > MC2 > Chapter Ch9 > Lesson 9.3.3 > Problem 9-112

9-112.

Find the area and circumference of a circle with a diameter of 14.4 inches. Round your answer to the nearest hundredth. Homework Help ✎

Area: π • r2

Circumference: π · 2r

Find the radius based on the given diameter and substitute in for r to solve for the area and circumference.

A = π (7.2)2 ≈ 162.86 in2

What would the circumference be?