1.

prove that area of 4 walls of a room is 2(l+b)×h

Answer»

Formula of the area of four walls,

=> (area of the base ) + (area of ceiling)=> Area of base = l * b=> Area of ceiling = l * b

So,

=> (area of the base ) + (area of ceiling) = 2(l*b)=> As per Surface area of a cuboid we have 2(l+b)*h

Then finally we get,

Area of four walls = 2(l+b)*h


Discussion

No Comment Found

Related InterviewSolutions