Two cubes each of volume 125 cm3 are joined end to end to form a solid. Find the surface area of the resulting cuboid.
Volume of each cube = 125 cm3
So, edge of each cube = 5 cm
For new cuboid formed, l = 5+5 = 10 cm
b = 5 cm
h = 5 cm
Therefore, surface area of the resulting cuboid = 2 (lb + bh + lh)
= 2 (10 × 5 + 5 × 5 + 10 × 5) cm2
= 250cm2