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Find the Cube Root of the Following Natural Number 343 . - Mathematics

Sum

Find the cube root of the following natural number 343 .

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Solution

Cube root using units digit:
Let us consider 343.
The unit digit is 3; therefore, the unit digit in the cube root of 343 is 7.
There is no number left after striking out the units, tens and hundreds digits of the given number; therefore, the cube root of 343 is 7.
Hence, \[\sqrt[3]{343} = 7\] . 

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RD Sharma Class 8 Maths
Chapter 4 Cubes and Cube Roots
Exercise 4.3 | Q 4.01 | Page 22
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