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