Question

sixth root of 216. is it a surd

Answer 1

there are 3 requirements to prove that a number is a surd or not
I) radicand is a rational number
ll) order is a rational number
lll) the number is an irrational number
here 6√216
radicand 216 is rational number
order 6 is a natural number
6√216is an irrational number
therefore 6√216 is a surd
hope it helps you