Question

What is the approximate value of the cube root of the number $9?$

• A. $2.08$
• B. $2.19$
• C. $2.34$
• D. $2.51$

Answer 1

Answer: (A)

$2.08$

First multiply and divide by $1,000,000,$ we get
$\sqrt[3]{3\frac{9\times 1000,000}{1000,000}}$
$\sqrt[3]{39,000,000}÷100$
Now find the closest cube root of $9,000,000.$
${208}^3=8,998,912,$ therefore we can say that $\sqrt[3]{39}$ $\sim$ $\frac{208}{100}\sim 2.08$