(i) 7

Cube of 7 = 7 × 7 × 7 = 343

(ii) 12

Cube of 12 = 12 × 12 × 12 = 1728

(iii) 16

Cube of 16 = 16 × 16 ×16 = 4096

(iv) 21

Scube of 21 = 21 × 21 × 21 = 9261

(v) 40

Cube of 40 = 40 × 40 × 40 = 64000

(vi) 55

Cube of 55 = 55 × 55 × 55 = 166375

(vii) 100

Cube of 100 = 100 × 100 × 100 = 1000000

(viii) 302

To find cube of 302 we make it in form

=

= 27000000 + 8 + 540000 + 3600 = 27362408.

(ix) 301

To find cube of 301 we make it in form

=

= 27000000 + 1 + 270000 + 900 = 27180601.