Advertisements
Advertisements
Question
If the cube of a squared number is 729, find the square root of that number
Advertisements
Solution
729 = `bar(3 xx 3 xx 3) xx bar(3 xx 3 xx 3)`
`(729)^(1/3)` = 3 × 3 = 9
∴ The cube of 9 is 729.
9 = 3 × 3 ...[i.e. 3 is squared to get 9]
We have to find out `sqrt(3)`
`sqrt(3)` = 1.732
APPEARS IN
RELATED QUESTIONS
What happens to the cube of a number if the number is multiplied by 5?
Write true (T) or false (F) for the following statement:
No cube can end with exactly two zeros.
Which of the following number is cube of negative integer - 2197.
Show that the following integer is cube of negative integer. Also, find the integer whose cube is the given integer −2744000 .
Three numbers are in the ratio 1 : 2 : 3. The sum of their cubes is 98784. Find the numbers.
Making use of the cube root table, find the cube root
1346.
Find the cube-root of 8000.
The cube of 0.0012 is 0.000001728.
If a2 ends in 5, then a3 ends in 25.
Cube roots of 8 are +2 and –2.
