3] The volume of a cube is 54 cm cube . find the length of its edge .

4] How many 4 cm long cubes can be cut from a cube whose edges are 20cm in length ?

3) Given Volume= 54cm³

We know that, Volume of cube= Side³

Let the side be s

By given data

s³= 54

³√s³= ³√54

s= 3.8 cm

4) Side of each cube to be cut= 4 cm

Volume= Side³ = 4³= 64cm³------------------ (1)

Side of Cube from which cubes are to be cut= 20cm

Volume= side³= 20³= 8000cm³------------- ------ ----(2)

Number of cubes that can be cut= Volume of (2) / Volume of (1)

8000/ 64= 125(Answer )