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# Geometry

## Maximizing Rectangular Prism Surface Area

Directions: Using the digits 1 through 9 at most one time each, fill in the boxes to list the dimensions of a rectangular prism with the greatest possible surface area. Source: Robert Kaplinsky

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## Circle Radius

Directions: What is a radius for a circle that has an area of 20 to 25 square feet? Source: Nathan Charlton

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## Rectangular Prism Surface Area Versus Volume

Directions: What is least amount of surface area possible on a rectangular prism with a volume of 64 cubic inches? Source: Robert Kaplinsky

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## Rectangular Prism Surface Area

Directions: List the measurements of three different rectangular prisms that each have a surface area of 72 square units? Source: Robert Kaplinsky

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## Circles and Square

Directions: The diagram shows a square and four semicircles formed using each side of the square as a diameter. What fraction of the square is shaded? Source: Dylan Kane

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## Which Rectangle is More Like a Square?

Directions: Which rectangle is more like a square?  Rectangle A is 13 units by 15 units.  Rectangle B is 2 units by 3 units. Source: Robert Kaplinsky

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## What Measurements Make a Circle?

Directions: What is one possible set of values for the area and circumference of the same circle? Source: Nathan Charlton

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## Which Circle Is Bigger? (Middle School)

Directions: Which circle is bigger: one with an area of 30 square units or one with a circumference of 30 units?  How do you know? Source: Robert Kaplinsky

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