Question

We know that 3√0.729

Answer 1

find the value of √25

Answer 2

√400

Answer 3

To find \( \sqrt[3]{0.729} \), we can express 0.729 as a fraction or in a simpler form.

We know that:
\[
0.729 = \frac{729}{1000}
\]

Next, we can find the cube root of both the numerator and the denominator:
\[
\sqrt[3]{0.729} = \sqrt[3]{\frac{729}{1000}} = \frac{\sqrt[3]{729}}{\sqrt[3]{1000}}
\]

Calculating both cubic roots, we have:
\[
\sqrt[3]{729} = 9 \quad \text{(since \( 9^3 = 729 \))}
\]
\[
\sqrt[3]{1000} = 10 \quad \text{(since \( 10^3 = 1000 \))}
\]

Therefore:
\[
\sqrt[3]{0.729} = \frac{9}{10} = 0.9
\]

Thus, the final result is:
\[
\sqrt[3]{0.729} = 0.9
\]

Answer 4

The value of \( \sqrt{25} \) is \( 5 \), because \( 5 \times 5 = 25 \).

Answer 5

The value of \( \sqrt{400} \) is \( 20 \) because \( 20 \times 20 = 400 \).