Surface area of the cuboid = 2(5 x 4 + 5 x 3 + 4 x 3) = 2(20 + 15 + 12) = 94 cm²
Let's now represent the side length of the cube as s, then the surface area of the cube would be 6s². According to the problem, the surface area of the cube is 2cm² more than the surface area of the cuboid. Therefore, we can write an equation as:
6s² = 94 + 2
Simplifying the equation, we get:
6s² = 96
Dividing both sides by 6, we get:
s² = 16
Taking the square root of both sides, we get:
s = 4
Therefore, the side length of the cube is 4 cm.