No, it is irrational.
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Because the cube root of 343 is an integer.
27 is a perfect cube.
That's a perfect cube.
rational numbers are commonly referred to as fractions Any root ... square root, cube root, etc can be expressed as a rational exponent sq rt of x = x1/2 cube root of x = x1/3 if there is an exponent inside the radical you can also have rational exponents with some numerator other than 1 ex 4th root of x3 = x3/4
Yes; the square root of 900 is 30 which is a rational number.