Question

Find the cube root of (1) 729 ii)64 x 27
(iii) 2744 (iv) 64000 (v) 1.331​

Answer 1

Answers shown in image

Answer 2

Answer:

i) 9

ii) 12

iii) 14

iv) 40

v) 1.1

Step-by-step explanation:

Lets begin with what is a cube.

Lets take an example, $5^{3}$. Now how do we solve it? It's simple, all we should do is multiply 5 three times, that is, 5 x 5 x 5. (Note: It is NOT 5 x 3). Now what is 5 x 5 x 5?

5 x 5 is 25, 25 x 5 is 125. Hence, $5^{3}$ = 125.

Now lets go to what is cube root.

This is how a cube root equation looks like: $\sqrt[3]{125}$.

Cube root simply means, you have to find a number, that if multiplied 3 times should give the number asked.

In this question, $\sqrt[3]{125}$, we have to find a number, that is multiplied 3 times will give 125. How do we do this? You have to memorize the cube root table. (attached below)