Question

The three edges of cube are xcm, 8cm, 10cm is melted and recasted into a cube of edge 12 cm. find x

Answer 1

hey here is ur answer

but cube have all sides Equal measures but anyway

volume of cuboid = l*b*h

=8*10*x

=80x CM cube

volume of cube = s*s*s

=12*12*12

=1728 CM cube

1728=80x

x=1728/80

=21.6 cm

I hope this helps you

Answer 2

Answer:

your answer is 6 cm.

Step-by-step explanation:

Edge of 1st cube=x cm

edge of 2nd cube=8cm

edge of 3rd cube=10 cm

Edge of the resulting cube=12 cm

A/Q,

volume of the resulting cube=volume of(1st cube+2nd cube+3rd cube)

=>12^3=x^3+8^3+10^3

=>1728=x^3+512+1000

=>x^3=1728-1512

         =216

=>x=cube root of 216

      =6cm

Hope this helps you a lot.....