The area of an equilateral triangle is (√3)/4 times the square of the side length. Your prism's volume is

v = (√3)/4*(8 cm)^2*(12 cm)

v = (√3)/4*(8 cm)^2*(12 cm)

**v = 192√3 cm^3****v ≈ 332.6 cm^3**v = (√3)/4*(8 cm)^2*(12 cm)

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