21 of them because 231/11 = 21
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3 x 7 x 11 = 231
No! It is divisible by 21 and 11 (21x11=231)
It is: 3*7*11 = 231
Three 66 / 3 = 22 231 / 3 = 77 Eleven 66 / 11 = 6 231 / 11 = 21
21 x 11 = 231 -- There are 231 square feet on the floor. -- There are 231 square feet on the ceiling. -- There are a lot more square feet on the walls, but in order to calculate them, you need to know the height of the room.