Question

Find the cube root of $216\times 729$.

• A. 54
• B. 81
• C. 72
• D. 27

Answer 1

The correct option is A

54

Cube root of $216\times 729$ will be equal to $\sqrt[3]{3216\times 729}$

216 can be expressed as $(6\times 6\times 6)$ which is $6^3$

729 can be expressed as $(9\times 9\times 9)$ which is $9^3$

So, $\sqrt[3]{3216\times 729}$ will be equal to

$\sqrt[3]{36^3\times 9^3}$

= 54