Question

The cube root of 0.000729 is........?

• A. 0.9
• B. 0.09
• C. 0.009
• D. 0.0009

Answer 1

Answer: (B)

0.09

Answer 2

For finding the cube root of $0.000729$, we can write it in a simpler form:

$0.000729 = \frac{729}{1000000} = \frac{729}{(100)^3}$

We know that the cube root of $729$ is $9$ because $9^3 = 729$

Thus, the cube root of $0.000729$ is:

$\sqrt[3]{0.000729} = \frac{9}{100} = 0.09$

Therefore, the cube root of $0.000729$ is $0.09$.

So, The correct option is (B).