Question

Height of a rectangular room is 5m and perimeter of floor is 50 m then find area of four walls to be painted?

Answer 1

Area of the 4 walls = Perimeter x Height

Find the area:

Area = 50 x 5

Area = 250 m²

Answer: The area of the 4 walls is 250 m²

Answer 2

Length= 6m

Breadth = 5m

Height = 3m

Area of windows and door = 14m2

So,

Area to be painted = area of four walls + area of ceiling - area of windows and door

= 2(l+b)h + lb - 14

=2(6+5)*3 + 6*5 - 14

=2*11*3 + 30 - 14

=66 + 30 - 14

=82 m2