Help me please math is hard

14

Step-by-step explanation:

The volume of a 3d rectangular prism is the length*width*height

Therefore your answer is:

3.5*8*0.5 = 14

30

step-by-step explanation:

times by times

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have