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The Obelisk

Category: Geometry

Used in the following map:

UO Math Trail

If you think of the obelisk as a triangle on top of a trapezoid, use the following measurements to estimate the total surface area of the obelisk. The width at the bottom of the obelisk is 3 feet, the width at the top of the trapezoid is 2 feet. The total height of the obelisk is 34 feet. The height of the triangle on top of the obelisk is 3.5 feet.



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