Wrapping Around the World

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How much string is needed to wrap around the world?

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Walking Around the World

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Compare the distance a man’s head travels to the distance his feet travel when he walks around the world.

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Surface Area

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Relate the surface area of a sphere to the area of a circle.

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Surrounding Squares

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Find a method that will construct a square that has the same area as the area of a given circle.

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Circle Inscribed in a Semicircle

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Compare attributes of a circle that is inscribed in a semicircle to attributes of that semicircle.

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Segment Areas

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Determine the measure of the central angle of a circle that will make the shaded region’s area 1/ 4 of the entire circle’s area.

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Dividing Pizza

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Compare slices of pizza from pizzas with different diameters.

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Summing Circles

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Finding the cumulative area of shrinking circles.

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Inscribed Circle

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Finding an estimation for the area of a circle.

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Target Areas

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Determine the area of a target formed by concentric circles.

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