Volume of the cube = side× side× side
= 20× 20× 20
= 8,000 cu cm
Volume of the cuboid = length× breadth× height
= 10× 10× height
= 100 × height
Volume of cuboid = volume of the cube
So, 100 × height = 8,000 cu cm
100 × 80 = 8,000 cu cm
∴ Height of the cuboid = 80 cm