RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)

Subject: Maths - Class 8th

Q. No. 16 of Exercise 21.4

Listen NCERT Audio Books to boost your productivity and retention power by 2X.

16

A metal cube of edge 12 cm is melted and formed into three smaller cubes. If the edges of the two smaller cubes are 6 cm and 8 cm, find the edge of the third smaller cube.

Given,


Edge of metal cube = 12 cm


Edge of smaller two cubes = 6 cm , 8 cm


Let edge of third cube = a cm


So,


Volume of metal cube = sum of volume of three small cubes


=


=


=


So,


Edge of third smaller cube would be = 10 cm


Chapter Exercises

More Exercise Questions