Question

cube root of 0.250047​

Answer 1

0.63


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Answer 2

Answer: the number 0.250047

To find: its cube root

Solution:

∴ 250047

= 3 × 83349

= 3 × 3 × 27783

= 3 × 3 × 3 × 9261

= 3 × 3 × 3 × 3 × 3087

= 3 × 3 × 3 × 3 × 3 × 1029

= 3 × 3 × 3 × 3 × 3 × 3 × 343

= 3 × 3 × 3 × 3 × 3 × 3 × 7 × 49

= 3 × 3 × 3 × 3 × 3 × 3 × 7 × 7 × 7

So,  

250047 = (3 × 3 × 7)³

= (63)³

0.250047

= (250047 / 1000000)

= 63³ / 100³

= (63 / 100)³

= (0.63)³

Hence, cube root of 0.250047 is 0.63

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