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. 7 of Exercise 21.1

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What will happen to the volume of a cube, if its edge is

(i) halved (ii) trebled?


Let edge of cube = a

So volume of cube = a3

Case (i)

Edge become =

Volume become = =

Case (ii)

Edge becomes = 3a

Volume become =

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