Question

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

Answer 1

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 $in^{2}$

Your answer is C: 234 $in^{2}$

Hope this helps!