Question
The cube root of .000216 is
- 0.6
- 0.006
- 0.06
- 0006
Hint:
For a number x, its cube root y is such that y * y * y = x.
The correct answer is: 0.06
GIVEN-
Given number = 0.000216
TO FIND-
Cube root of 0.000216
SOLUTION-
3√ 0.000216 = 3√ (0.06 * 0.06 * 0.06)
∴ 3√ 0.000216 = 0.06
FINAL ANSWER-
Option 'b' i.e. '0.06' is the correct answer to the given question.
Related Questions to study
What is the smallest number by which 3600 be divided to make it a perfect cube?
What is the smallest number by which 3600 be divided to make it a perfect cube?
The largest four-digit number, which is a perfect cube, is:
The largest four-digit number, which is a perfect cube, is:
The least number that should be multiplied with 1008 to make it a perfect square is
Alternatively, the question can be solved by multiply numbers in each of the options given and then check whether the resultant number is a perfect square or not-
a. 5
1008 * 5 = 5040
We know that 5040 is not a perfect square because √5040 = 12√35.
b. 2
1008 * 2 = 2016
We know that 2016 is not a perfect square because √2016 = 12√14.
c. 7
1008 * 7 = 7056
We know that 7056 is a perfect square because √7056 = 84.
d. 8
1008 * 8 = 8064
We know that 8064 is not a perfect square because √8064 = 24√14.
FINAL ANSWER REMAINS THE SAME.
The least number that should be multiplied with 1008 to make it a perfect square is
Alternatively, the question can be solved by multiply numbers in each of the options given and then check whether the resultant number is a perfect square or not-
a. 5
1008 * 5 = 5040
We know that 5040 is not a perfect square because √5040 = 12√35.
b. 2
1008 * 2 = 2016
We know that 2016 is not a perfect square because √2016 = 12√14.
c. 7
1008 * 7 = 7056
We know that 7056 is a perfect square because √7056 = 84.
d. 8
1008 * 8 = 8064
We know that 8064 is not a perfect square because √8064 = 24√14.
FINAL ANSWER REMAINS THE SAME.