Asked by Cindy
Eight sided dice can be described as two square based pyramids stuck together at the bases.
Their faces are equilateral triangles. If the edge of one die is 2mm, find the difference in
materials cost between a solid gold die and a “gold” painted plastic die.
(Gold costs $40.38 per gram. Gold weighs 0.02 grams per cubic mm. Plastic costs $10 per gram.
Plastic weighs .01 grams per cubic mm. “Gold” paint costs $0.01 per square mm.)
Their faces are equilateral triangles. If the edge of one die is 2mm, find the difference in
materials cost between a solid gold die and a “gold” painted plastic die.
(Gold costs $40.38 per gram. Gold weighs 0.02 grams per cubic mm. Plastic costs $10 per gram.
Plastic weighs .01 grams per cubic mm. “Gold” paint costs $0.01 per square mm.)
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