Each of the dimensions of a pyramid are doubled. what is true about the volume of the new pyramid?

If the dimensions are doubled, the new pyramid is 8 times the original volume.

Find it by the formula v1=(1/3)*a*b*h
and when the dimensions are doubled, it will be v2=(1/3)*(2a)*(2b)*(2h)
By simplifying this we get:    v2=(1/3)*{8}*abh

So, the new volume is 8 times more than original.