Question

the dimension of metallic cuboid are 100cm *80 cm*64cm melted in to a cube find the surface area of cube

Answer 1

length of cuboid=100cm
breadth of cuboid=80cm
height of cuboid=64cm

volume of cuboid=l*b*h
=100*80*64
=8000*64
=512000cm3
It is melted to form cube. So,
volume of cube=a3
a3=512000
a=3√512000
a=80
The length of each side of cube=80cm
surface area of cube=6a2
=6×80×80
=6×6400
=38400cm2

Answer 2

Hi friend,

Length of the cuboide=100cm
Breadth of the cuboide=80cm
Height of the cuboide=64cm
Volume of the cuboide=L*B*H
=100*80*64
=512000cm^3

Now the melted cube volume=a^3
Side=?
a^3=512000
a=3√512000
a=80cm

Surface area of the cube(TSA)=6a^2
=6*80*80
=38400cm^2

Hope it helped you.................