Question

Find the area of four walls of a room (Assume that there are no doors or windows) if its length 12 m; breadth 10 m and height 7.5 m.

Answer 1

Length of the room = 12 m 

Breadth of the room = 10 m 

Height of the room = 7.5 m 

Area of four walls of the room 

A = 2h (l + b) 

A = 2 × 7.5 (12 + 10) 

= 15 × 22 

= 330 m²