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. 2 of Exercise 21.3

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2

Find the surface area of a cube whose edge is

(i) 1.2 m


(ii) 27 cm


(iii) 3 cm


(iv) 6 m


(v) 2.1 m

(i) We have,


Edge of cube = 1.2 m


Surface area of cube =


(ii) We have,


Edge of cube = 27 cm


Surface area of cube =


(iii) We have,


Edge of cube = 3 cm


Surface area of cube =


(iv) We have,


Edge of cube = 6 m


Surface area of cube =


(v) We have,


Edge of cube = 2.1 m


Surface area of cube =


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