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数学

三棱柱

变量说明

a,b,c= triangle sidesh_t= triangle heightl= prism lengthV= volumeSA= surface area

Volume

Triangular base area times length.

Lateral surface area

Three rectangles.

Total surface area

Lateral area plus two triangular bases.

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专业提示

Volume of any prism = base area × height (length). This works for triangular, rectangular, hexagonal — any shape base. Just find the cross-sectional area and multiply by the length.

难度:初级

你知道吗?

Glass prisms split white light into a rainbow (spectrum) because different wavelengths refract at slightly different angles (dispersion). Isaac Newton used a prism in 1666 to prove that white light is a combination of all colors.

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Reviewed May 2026
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