How many sq ft are in a 6x7 ft room?

Answer 1

42

Answer 2

Floor . . . . . 42 sq ft

Ceiling . . . . 42 sq ft

Walls . . . need to know the height of the room in order to calculate the walls

If I've understand the question correctly?
The square footage floor area of a room 6ft x 7ft is: 6 x 7 = 42 ft2 (either sq ft or ft2 can be used for square feet)

Answer 3

To find the square footage of a room, you multiply the length by the width. In this case, a 6x7 ft room would have an area of 42 square feet.