Question

How many cubes each of total surface area 54 cm
can be made from a cube of edge 1.2 m.
Ans is 64​

Answer 1

Answer:

64 is answer I think

Step-by-step explanation:

if it is correct pls follow or mark as brilliant

Answer 2

Answer:

From a cube of edge 1.2m, total 64000 cubes each with surface area 54cm² can be formed.  

Step-by-step explanation:

Given, the total surface area of one small cube = 54cm²

The edge length of one big cube = 1.2m =120cm

We know the surface area of the cube = 6a²

We can use the surface area to find the edge length of small cube:

6a² = 54

a² = 9

a = 3cm

Volume of the small cube = a³ = (3)³ = 27cm³

Volume of the big cube = (120)³ = 1728000cm³

Number of small cubes formed  $=\frac{Volume\; of \ big\; cube}{Volume \; of \; small \;cube}$

                                                  $=\frac{1728000}{27}$

                                                  $=64000$ small cubes

Therefore, 64000 cubes each with edge length 3cm can be formed from a cube of edge 1.2meter.