**A cubical box has each edge 10 cm and another cuboidal box is 12.5 cm long, 10 cm wide and 8 cm high.**

**(i) Which box has the greater lateral surface area and by how much?****(ii) Which box has the smaller total surface area and by how much?**

**Answer (i)**

Edge of cubical box **cm**

Lateral surface area of cubical box **(1)**

Length of cuboidal box **cm**

Breadth of of cuboidal box **cm**

Height of cuboidal box **cm**

Lateral surface area of cuboidal box ** (2)**

From **(1**) and **(2)**, we can say that cubical box has greater lateral surface area by 40 .

**Answer (ii)**

Total surface area of cubical box

Total surface area of cuboidal box

Therefore, cubical box has smaller total surface area by 10