Question

a room 6m by 4m by 5m high ,is to papered with wall paper 75 cm wide.what length of wallpaper is reqired?​

Answer 1

Answer:

1 m........................

Answer 2

Answer:

Total surface area of room = 2(lb+bh+hl)

= 2(6x4 + 4x5+ 5x6) = 148 sq. m. = 1480000 sq. cm.

Breadth of wallpaper = 75cm

Length of wallpaper required = Total surface area of wall/breadth

= 1480000/75 cm = 19733.33 cm

Hope it helps..!! ^_^