find the cube roots of the following no.s through estimation

(i)10648 (ii)15625 (iii)110592 (iv)91125

(i)10648
= 2*5324
=2*2*2662
=2*2*2*1331
=2*2*2*11*121
=2*2*2*11*11*11
So cube root of 10648=2*11=22

(ii)15625
=5*3125
=5*5*625
=5*5*5*125
=5*5*5*5*25
= 5*5*5*5*5*5

So cube root of 15626 = 5*5=25