Question

The total number area of four walls of a room is 660 m square and the length of a twist is breadth if the height of a room is 11 then the area of a ceiling

Answer 1

let breadth be x so length be 2x
we have
2 (2x+x)11=660
3x=660/22
x=30/3=10

so length is 20m and breadth is 10m

so area of wall =20×10=200m^2