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What is the volume of a sphere of radius 5? If we make a cylinder two times taller, and its radius three times bigger, how many times larger would it become in volume? See more

Three identical tanks are shown above. The spheres in a given tank are the same size and packed wall-to-wall. If the tanks are filled to the top with water, then which tank would contain the **most** water?

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A solid sphere of chocolate has a volume of \(288\pi\). The chocolate is then melted down and reshaped into a solid cube. Assume no chocolate was wasted.

Did the sphere have a greater surface area or does the cube?

**Useful equations:**

- Volume of a sphere: \(V=\frac{4}{3}\pi r^3\)
- Volume of a cube: \(V=a^3\)
- Surface area of a sphere: \(A=4\pi r^2\)
- Surface area of a cube: \(A=6a^2\)

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How many cubes measuring 2 units on one side must be added to a cube measuring 8 units on one side to form a cube measuring 12 units on one side?

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What is the volume of the octahedron inside this \(8 \text{ in}^3\) cube?

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A chocolate shop sells its products in 3 different shapes: a cylindrical bar, a spherical ball, and a cone. These 3 shapes are of the same height and radius, as shown in the picture. Which of these choices would give you the most chocolate?

\[\text{ I. A full cylindrical bar } \hspace{.4cm} \text{ or } \hspace{.45cm} \text{ II. A ball plus a cone }\]

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