Two cubes of sides 10cm are joined end to
end .Find the surface area of the cuboid
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Sol. Two cubes are joined end to end,we get
l= length of cuboid =10+10=20cm
b=breadth of cuboid=10cm
h=height of cuboid =10cm
S.A of cuboid =2(lb+bh+hl)
=2(20x10+10x10+10x20)
=2(200+100+200)
=2(500)=100cm2
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