A community center is organizing a dance. There are four large columns arranged at the corners of a square. The decorating committee will hang three large streamers from each column to every other column. How many streamers are needed?

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Identify Columns: Identify the number of columns and their arrangement. There are four columns at the corners of a square. Each column will have streamers connecting to the other three columns. Calculate Total Connections: Calculate the total number of streamer connections without considering duplicates. Each of the four columns connects to three others, so 4 columns x 3 connections = 12 connections. Adjust for Duplicates: Adjust for duplicate connections. Each connection is counted twice (once from each end), so we need to divide by 2 to avoid duplication. 12 connections ÷ 2 = 6 unique connections. Calculate Streamers Needed: Calculate the total number of streamers needed. Each unique connection will have three streamers. So, 6 unique connections x 3 streamers = 18 streamers.

A community center is organizing a dance. There are four large columns arranged at the corners of a square. The decorating committee will hang three large streamers from each column to every other column. How many streamers are needed?

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