What is the surface area of a cube with a side length of 18 meters

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?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

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