**1.** 2 cubes each of volume 64 are joined end to end. Find the surface area of the resulting cuboid.

**Solution:**

let be length of each cube

Volume of each cube

=4 cm

If, we join 2 cubes each having side equal to 4 cm, we get a cuboid

Length of cuboid= L=8 cm

Height of cuboid=H=4 cm

Breadth of cuboid=B=4 cm

We know that Surface Area of Cuboid