Find the cube root of 42875,using estimation method- On notebook
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Given : 42875,
To find : cube root using estimation method
Solution:
42875
27000 < 42875 < 64000
=> ∛27000 < ∛42875 < ∛64000
=> 30 < ∛42875 < ∛40
Only cube of number ending with 5 will end with 5
only number between 30 and 40 ending with 5 is 35
∛42875 = 35
Verification :
35³ = 35 * 35 * 35 = 42875
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