Two cubes each of 10 cm edge are joining end to end the surface area of the resulting cuboid is

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Two cube each of 10 cm edge are joined end to end. Find surface area of resulting cuboid

Solution

Here the length becomes double, ie 20cm,
other variabls , breadth and height remians same, since the cubes are joined side to side. Length of cuboid= 20cm breadth= 10cm height= 10 cm

total surface area of cuboid = 2(lb+bh+ lh)

=2(20×10+10×10+20×10) =2(200+100+200) =2*500cm.sq

=1000 sq.cm