The square root of 216 is 14.6969384567. This cubed is 3174.53870665.
72
446
6 times the square root of 6
36
6
46
sqrt(216) = 14.6969 (to 4 dp).
The square root of 36 is 6. 6 cubed is 216.
6
(x - 6 times the square root of 6)(x + 6 times the square root of 6)
√216 = 6√6 = 14.697