Iwould a friend to me with this one too - !

Volume of pyramid = (L * W * H) / 3

(11 * 11 * 15) / 3 = 605cm^3

Hello Gary!

Let me do it in Short for you!

V = a^2 h/3 = 11^2 x 15/3 = 605.

Since we know that the volume of pyramid = (L * W * H) / 3

So in Short, V = 605, The Correct Answer would be Option "C". 605 cm3

Hope this Helps! Have A WONDERFUL Day! :)