Respuesta :

Answer:

3 cm

Explanation:

I think the question have some error because if height = 2 m = 200cm.

Volume of box = l * b * h

V = 30 cm³

b = 5 cm

h = 2 cm

l = ?

V = l * b * h

30 cm³ = l * 5 * 2

l = 30 / 10

l = 3 cm