Question

9 is the cube root of (a) 343 (b) 729 (c) 629 (d) 81 ​

Answer 1

A cube root is ‘to the power of 3’. Therefore in order to solve the question, you need to calculate 9 x 9 x 9. This is equal to ‘b) 729’.

Answer 2

(b) 729

Explanation:

9 × 9 × 9 = 9^3 = 729

Thus, 9 is the cube root of 729