Question

Find thencube root of 91125 by estimation method

Answer 1

Answer:

45

Step-by-step explanation:

Step-by-step explanation

1. Form groups of three starting from the rightmost digit of 91125

91 125

2. Consider the first group 125. The digit 5 is at its one’s place.

Assume the one’s place of the required cube root as 5.

3. Consider the other group,91. Cube of 4 is 64, and cube of 5 is 125.

91 lies between 64 and 125.

The smaller number among 4 and 5 is 4.

Assume 4 as ten’s place of the cube root of 91125 .

Therefore ,

$\sqrt[3]{91125}$

=45

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Answer 2

Step-by-step explanation:

Answer =45

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