Question

Answer it fast......
plz...give correct ans....​

Answer 1

Answer:

Volume of cube = l cube

512 = l3

l = 8 cm

Both cubes have side 8 cm

surface area of 1 cube is 6l2

                                    = 6 * 8 * 8

= 384 cm2

of 2 = 2 * 384

= 768 cm2

Answer 2

Answer:

Given that

Volume of cube = 512 cm3 

side3 = 512 

side3 =  83 

side = 8 cm 

Dimensions of new cuboid formed 

l = 8+8 = 16 cm,

b = 8cm,

h = 8cm

Surface area = 2(lb +bh+hl)

therefore substituting the value ....

u will get....the surface area as...

640cm^2.....

HOPE IT HELPS U MATE......✌✌✌