Question

A cuboid 15 cm×12cm×18cm is melted and cast in cubes of 3cm edge. How many such cubes would be mafe? ​

Answer 1

Answer:

Dimensions of cuboid =18cm×15cm×4.5cm

Hence, volume of cuboid =18×15×4.5

=1215cm

3

Dimensions of cube =1cm×1cm×1cm

Hence, volume of cube =1×1×1=1cm

3

Therefore,

Required number of solid cubes =

1

1215

=1215

Answer 2

Answer:

A cuboid 15 cm×12cm×18cm is melted and cast in cubes of 3cm edge. 120 cubes would be made.

Step-by-step explanation:

Given: Dimensions of the given metallic cuboid=18cm×15cm×12cm

Volume of solid metallic cuboid = 18×15×12=3240cm³

If the edge of cube = 3 cm

Then Volume of Solid unit cubes =(side)³ = (3)³ = 27cm³  

Number of solid unit cubes =3240 ÷ 27= 120cubes.

A rectangular solid metallic cuboid 15 cm × 12cm × 18  cm is melted and recast into solid unit cubes. Then the number of solid unit cubes is 120 cubes .