Need Help!

Hi Madu. Please post what you've tried so far, or explain why you're stuck.

I would start by finding the height of the equilateral triangle. Next, I would use that height to find the triangle's area. I would then multiply the triangle's area by the prism's length, to get the volume.

Do you need formulas?

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Thank you so much for the concern.I got 160√3cm^3. Did you got the same ?
 
Madu said:
… I got 160√3 cm^3. Did you [get] the same ?
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Yes, I did!

For a triangular prism with triangle side lengths {a,b,c} and length L, the volume formula is:

V = 1/4 ∙ L ∙ √[2(ab)^2 + 2(ac)^2 + 2(bc)^2 - a^4 - b^4 - c^4]

When a = b = c, the volume formula simplifies to:

V = √(3)/4 ∙ L ∙ a^2

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