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.

(i) Given,

Length = 10 cm

Height = 14 cm

So,

Surface area of cuboid = =

=

(ii) Given,

Length = 6 dm

Height = 10 dm

So,

Surface area of cuboid =

=

(iii) Given,

Length = 2m

Height = 5m

So,

Surface area of cuboid =

=

(iv) Given,

length = 3.2 m= 32 dm

height = 250 cm= 25 dm

so,

surface area of cuboid =

=

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