Vanessa bakes a rectangular cake that is 9 inches wide,13 inches long and 2 inches high. she removes the cake from the pan to frost it. how many square inches of frosting does she need? a)144 in2 b)205 in2 c)234 in2 d)322 in2

This is a rectangular cake, and there are 3 measurements, meaning that you are evidently finding volume.

Let's go back, first off, the formula for volume is...

V = L x W x H (Length, Width, Height)
Your measurements are 9 in, 13 in, 2 in.

All you need to do is follow the formula and multiply them.

9 x 2 = 18
18 x 13 = 234

Your answer is C: 234

Hope this helps!