Question

Two cubes each of 20 cm edge are joined end to end. Find the surface area resulting cuboid.

Answer 1

Length=2×20=40cm
Breadth=20cm
Height=20cm
Surface Area==2(lb+bh+lh)
=2(40×20+20×20+40×20)
=2(800+400+800)
=2(2000)
=4000cm^2

Answer 2

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