SOLUTION: Hello! I need to find the volume of a regular triangular pyramid that has base edges of length 30 and height 10. I found the volume using the formula V = ((a^(3))/(6√2)), a

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Question 1133463: Hello!
I need to find the volume of a regular triangular pyramid that has base edges of length 30 and height 10.
I found the volume using the formula V = ((a^(3))/(6√2)), and got 3181.9805 units^3, but it appears to be wrong.
Thanks for helping!
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Hello!
I need to find the volume of a regular triangular pyramid that has base edges of length 30 and height 10.
I found the volume using the formula V = ((a^(3))/(6√2)), and got 3181.9805 units^3, but it appears to be wrong.
Thanks for helping!
You didn't seem to use the formula for the volume of a triangular pyramid, which is: , with:

V being volume

B being the area of the BASE (a TRIANGULAR base, in this case)

h being the height, which was given

Also remember that this is a REGULAR TRIANGULAR pyramid which suggests that its base is a REGULAR (EQUILATERAL) triangle. 

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