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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