Q. 24.6( 13 Votes )

Evaluate:

(i) (1.2)3

(ii) (3.5)3

(iii) (0.8)3

(iv) (0.05)3

Answer :

(i) To calculate the cube of (1.2)3


We have to multiply the given number three times;


= (1.2 × 1.2 × 1.2) = 1.728


Now by converting it into fraction we get,


=



(ii) To calculate the cube of (3.5)3


We have to multiply the given three times;


= (3.5 × 3.5 × 3.5) = 42.875


Now by converting it into fraction we get,


=



(iii) To calculate the cube of (0.8)3


We have to multiply the given number by its power;


= (0.8 × 0.8 × 0.8) = 0.512


Now by converting it into fraction we get,


=



(iv) To calculate the cube of (0.05)3


We have to multiply the given number by its power;


= (0.05 × 0.05 × 0.05) = 0.000125


Now by converting it into fraction we get,


=



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