3 cubes each of volume 27cm^3 are joined end to end. Find the surface area of resulting cuboid

Answer: 126 cm^2

Step-by-step explanation:

side of cube is cube root of volume, so that s * s * s = v, s = (v) ^ (1/3)

v = 27 cm^3, s = 3 cm.

Cuboid (a/k/a rectangular prism) has sides 3s, s, s, two faces area s * s, four faces area 3s * s, total area 2*s^2 + 4*3*s^2 = 14*s^2 = 14*9 cm^2 = 126 cm^2

The surface area of the 3 cuboids joined together are 126 cm^2