Layla wants to build a wooden box with a volume of 45 cubic centimeters. She started with a width of 3 cm and height of 3 cm. How long should Layla make the box?

5 cm

Step-by-step explanation:

volume = length * width * height

V = LWH

She has V = 45 cm^3, W = 3 cm, H = 3 cm

45 cm^3 = L * 3 cm * 3 cm

45 cm^3 = 9 cm^2 * L

L = (45 cm^3) / (9 cm^2)

L = 45/9 * cm^3/cm^2

L = 5 cm

Answer: 5 cm