Building codes for a single family dwelling typically require hallways to be a minimum of 3 ft (36 inches) in width. A hallway that is 5 ft (60 inches) in width comfortably allows for the passage of two people. As a side note, the width of a typical wheelchair is 22 inches.
Residential building codes vary substantially from municipality to municipality and should be checked locally, but at minimum a hallway width should be no less than 36 inches.
3 feet.
3 feet.
Answer
21 feet
3 feet
Length is 3/4 of 36 ie 27 ft, width is 9 ft
5 and 10
48 inches
minimum width is like 10 cm and length is like 20 cm
36"