Surface area of the four walls .

Surface area is

A godown is 15m long and 12 m broad. The sum of the area of the floor and the ceiling is equal to the sum of areas of the four walls. The volume (in m^(3) ) of the godown is :

The length of a hall is 18m and the width 12m . The sum of the areas of the floor and the flat roof is equal to the sum of the areas of the four walls.Find the height of the hall.

The length of a hall is 20m and width 16m . The sum of the area of the floor and the flat roof is equal to the sum of the areas of the four walls.Find the height and the volume of the hall.

The length of a hall is 20m and width 16m . The sum of the areas of the floor and the flat roof is equal to the sum of the areas of the four walls.Find the height and the volume of the hall.

The area of the four walls of a room is 2640 sq. m and the length is twice the breadth and the height is given as 11 m. What is the area of the ceiling?