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Type: Multiple-Choice
Category: Three Dimensional Shapes
Level: Grade 11
Standards: HSG-GMD.A.3, HSG-MG.A.1
Author: nsharp1
Created: 3 years ago

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# Three Dimensional Shapes Question

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## Grade 11 Three Dimensional Shapes CCSS: HSG-GMD.A.3, HSG-MG.A.1

A city uses sand for reducing ice on its roads during the winter. The city has 20 piles of sand, which are cone-shaped, each with a diameter of 10 ft and a height of 8 ft. The city found that there were large rocks in the sand, and has had to send the sand away to remove the rocks, which accounted for about 25% of the total volume (rocks plus pure sand). When the pure sand returns, the city plans on making mounds of sand that are only 6 ft tall and 8 ft in diameter. How many full piles of sand will there be?
1. 7 full piles
2. 10 full piles
3. 31 full piles
4. 125 full piles
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