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In the diagram of circle a what is m

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost