Q. 1

Find the surface area of a cuboid whose

(i) length = 10 cm, breadth = 12 cm, height = 14 cm

(ii) length = 6 dm, breadth = 8 dm, height = 10 dm

(iii) length = 2m, breadth = 4 m, height = 5 m

(iv) length = 3.2 m, breadth = 30 dm, height = 250 cm.

Answer :

(i) Given,


Length = 10 cm


Breadth = 12 cm


Height = 14 cm


So,


Surface area of cuboid = =


=


(ii) Given,


Length = 6 dm


Breadth = 8 dm


Height = 10 dm


So,


Surface area of cuboid =


=


(iii) Given,


Length = 2m


Breadth = 4m


Height = 5m


So,


Surface area of cuboid =


=


(iv) Given,


length = 3.2 m= 32 dm


breadth = 30 dm


height = 250 cm= 25 dm


so,


surface area of cuboid =


=


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