Question

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

Answer 1

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