Question

2. Examine which of the following numbers are perfect cubes. In case of perfect cube, find the cube root:
(i) 729
(ii) 1331
(iii) 5324
(iv) 3375
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Answer 1

Answer:

i)$9^{3}$ =729

ii)$11^{3}$=1331

iii)it is not a perfect cube

iv)$15^{3}$=3375

Step-by-step explanation:

i)9 x 9 x 9=729

ii)11 x 11 x 11 =1331

iv)15 x 15 x 15=3375

Answer 2

Answer:

i)√729= (3*3*3*3*3*3)

after pairing we will get 3*3=9

ii) √1331=(11*11*11)

after pairing we will get 11

iii) √5324=it's not a perfect cube

iv) √3375=(5*5*5*3*3*3)

after pairing we will get 5*3=15

Step-by-step explanation:

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