Find and interpret perimeter and circumference in numeric and contextual problems.
Find every matching boundary representation
Problem
Using \(3.14\) for \(\pi~\), identify \(\text{every}~\text{card}\) with a boundary length of \(31.4~\text{units}\).
Cards: • A circle with diameter \(10~\text{units}\) • A circle with radius \(5~\text{units}\) • A square with side length \(8~\text{units}\) • A rectangle with length \(11~\text{units}\) and width \(4.7~\text{units}\) • The expression \(\pi~\times~10\) • A running track lane described as “\(\text{one}~\text{full}~\text{lap}\) around a circular path with radius \(6~\text{units}\)” • A triangle with side lengths \(12~\text{units}\), \(9~\text{units}\), and \(10.4~\text{units}\)
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