Question

D dimensions of a cuboid are 100cm cross 80cm cross 64 cm is melted and recast into a cube what is the tsa of the cube

Answer 1

Volume of cuboid = LxBxH where L is length B is breadth and H is height

Volume of cuboid = 100 * 80 * 64

= 512000 cm³

Volume of cuboid will be equal to volume of cube

So, Volume of cube = a³ where a is the side of the cube

a³ = 512000

a = ∛512000

a = 80

So side of square = 80 cm

Now Total surface area of cube = 6a² where a is the length of the side of the cube

So, tsa = 6 x 80 x 80 = 38400 cm²

Hence total surface area of square is 38400 cm².

Answer 2

find the answer in the below attachment