हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Find the Cube-root of 27/64

Advertisements
Advertisements

प्रश्न

Find the cube-root of `27/64`

योग
Advertisements

उत्तर

`(27)/(64)`

= `root(3)(27/64)`

= `sqrt(3 xx 3 xx 3)/(sqrt(4 xx 4 xx 4)`

= `(3)/(4)`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Cubes and Cube Roots - Exercise 4 (B) [पृष्ठ ५१]

APPEARS IN

सेलिना Concise Mathematics [English] Class 8 ICSE
अध्याय 4 Cubes and Cube Roots
Exercise 4 (B) | Q 2.1 | पृष्ठ ५१

संबंधित प्रश्न

Find the smallest number by which the following number must be multiplied to obtain a perfect cube.

243


Find the  cubes of the number 302 .


Write the cubes of 5 natural numbers of the form 3n + 2 (i.e. 5, 8, 11, ...) and verify the following:
'The cube of a natural number of the form 3n + 2 is a natural number of the same form i.e. when it is dividend by 3 the remainder is 2'.


Which of the following is  perfect cube? 

 64


Which of the following are cubes of odd natural numbers?
125, 343, 1728, 4096, 32768, 6859


By which smallest number must the following number be divided so that the quotient is a perfect cube?

107811


Which of the following number is  not perfect cubes? 

1728


By taking three different values of n verify the truth of the following statement:

If n is even , then n3 is also even.


By taking three different values of n verify the truth of the following statement:

If a natural number n is of the form 3p + 2 then n3 also a number of the same type.


Write true (T) or false (F) for the following statement:

8640 is not a perfect cube.


Which of the following number is cube of negative integer - 2744 .


Show that the following integer is cube of negative integer. Also, find the integer whose cube is the given integer −2744000 .


Find the cube root of the following natural number 4913 .


Find the cube root of the following natural number 1728 .


Show that: \[\sqrt[3]{- 125 \times 216} = \sqrt[3]{- 125} \times \sqrt[3]{216}\]


Show that:\[\sqrt[3]{- 125 - 1000} = \sqrt[3]{- 125} \times \sqrt[3]{- 1000}\]


Find if the following number is a perfect cube?
1728


Find the cube-root of -2744000


Find the cube-root of 2.744


79570 is not a perfect cube


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×