This math topic, labeled as "Circumference - Diameter to Equation," is designed to help students practice calculating the circumference of a circle given its diameter. The problems require students to apply the formula for the circumference of a circle, \( C = \pi d \), where \( d \) is the diameter of the circle. Each question presents a diagram of a circle, along with multiple choice answers expressed in LaTeX format, asking students to select the correct equation representing the circumference. This set of exercises is part of an introductory unit on circle circumferences within the broader context of geometry.
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Find the equation that represents the circumference of this circle