Question

Two cubes each of 10cm edge are joined end to end. Find the surface area of the resulting cuboid.
(a) 900 cm²
(b) 1000 cm²
(c) 1100 cm²
(d) 1200 cm²​

Answer 1

Answer:

1000cm²

Step-by-step explanation:

If two cubes are joined end to end, we get a cuboid such that

l= length of the resulting cuboid 10cm+10cm=20cm

b= breadth fo the resulting cuboid =10cm

h= height of the resulting cuboid =10cm

Surface are of the cuboid =2(lb+bh+lh)

=2(20×10+10×10+20×10)cm

=1000cm