A classroom in a college is 15m long and 12m broad. If the sum of the areas of its floor and the ceiling is equal to the sum of the areas of 4 walls of classroom , the volume of the classroom is.

Answer 1

let the height be h m
area of floor = 15(12) = 180 m^2
area of ceiling = 180 m^2

area of the 4 walls = 2(15)h + 2(12)h = 54h
54h = 360
h = 20/3 m

volume = 12(15)(20/3) = 1200 m^3

(Wow, the ceiling is over 6 m high? very poor design for a classroom)