Take a simple prism, like a box. Say it was originally 4 x 2 x 10. Its volume is 80. If the 4 is increased to 5, its volume is now 5 x 2 x 10 = 100 But if the 2 was increased to 3 instead, you'd have 4 x 3 x 10 = 120 So you can't say for sure, other than that the volume will be increased.