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THE CUBOID IS AS SHOWN IN THE ABOVE DIAGRAMS
# It has 6 rectangular surfaces
#It has 12 edges and 8 vertices.
TOTAL SURFACE AREA OF CUBOID:-
If Length of Cuboid= l
Breadth(width) of Cuboid= b
Height of Cuboid= h
Then , Total surface Area of Cuboid = 2( lxb + bxh +hxl) square units
Ex:-
If Length of Cuboid= l = 20cm
Breadth(width) of Cuboid= b = 10cm
Height of Cuboid= h= 8cm
Then , Total surface Area of Cuboid = 2( lxb + bxh +hxl)
= 2 ( 20x10 + 10x8 + 8x20) cm2
= 2 (200 + 90 +160) cm2
= 2 x 450 cm2
=600 cm2
