Question

How many cubes of edge 4cm,each can be cut out from cubiod whose length,breadth and height are 20cm,18cm and 16cm respectively?

Answer 1

Solution -  

∵ Volume of 1 cube = (Edge)³

​​= 4³ cm³  

= 64 cm³  

∵ Volume of cuboid = [ l × b × h ]  

= [ 20 × 18 × 16 ] cm³  

= 5,760 cm³  

∴ No. of cubes    

= Volume of cuboid/Volume of 1 cube    

= 5,760 cm³/64 cm³  

= 90  

∴ 90 Cubes can be cut from the cuboid

#Be Brainly ^ ^

Answer 2

Number of cubes =$\frac{volume \: of \: cuboid}{volume \: of \: cube}$

$= \frac{16 \times 18 \times 20}{4 \times 4 \times 4} \\ \\ = 90 \: cubes$