The square root of 231 is: ± 15.198684
√139 = 11.79 (4sf) but, √369.83 = 19.231 (5sf)
257
cube root(231) = 6.13579244
231 Radical 3
Below the Root - novel - has 231 pages.
231/1378 is already in its simplest form
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.
231 m2 is about 2,486.5 square feet.
6.13579244 (approximate, this is an irrational number)
231 square feet.
It is 86, 134 over 231.