Lateral surface area of a cube

Q.

Each edge of a cube is increased by $\left(\frac{27}{2}\right)x^2-6x^2$.Find the percentage increase in the surface area of the cube.

Q. What is the length of the side of a cube if its lateral surface area is $4{\text{cm}}^2$?

1. 4 cm
2. 1 cm
3. 2 cm
4. 3 cm

Q. If LSA of a cube is 100 cm${}^2$, then its side is:

1. 5 cm
2. 10 cm
3. 25 cm
4. 6 cm

Q.

Each edge of a cube is increased by 50%. Find the percentage increase in the surface area of the cube.