only one edge of a rectangluar prism is increased by a factor of two. if the volume of the original prism is 40 cm cubed what is volume of the new prism
Poorly worded question.
It would not be possible to double one of the "edges" only without affecting the others.
Did you mean, "one of the dimensions of a rectangluar prism is increased by a factor of two" ?
then in the original:
lwh = 40
then (2l)wh = 2 wlw = 80