Lateral surface area of a cube

Q. LSA of cube having side 3 cm is

1. $27{\text{cm}}^2$
2. $36{\text{cm}}^2$
3. $9{\text{cm}}^2$
4. $18{\text{cm}}^2$

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

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

Q. What's the ratio of the lateral surface areas of the cubes if
$\frac{l_1}{l_2}=\frac{1}{2}?$
[$l_{1}and{l}_2$ are the lengths of the sides of cubes]

1. $\frac{1}{4}$
2. $\frac{1}{2}$
3. $\frac{3}{4}$
4. $\frac{1}{3}$

Q. The lateral surface area of a cube of side a is ______ .

1. $4a^2$
2. $6a^2$
3. $12a^2$
4. $2a^2$

Q. What is the percentage increase in the lateral surface area of a cube, if each of its side is increased by 50% ?

1. 125%
2. 25%
3. 100%
4. 135%

Q.

Which among the following will have the largest value?

1. Surface area of a cube with side $6\text{cm}$.

2. Surface area of a cuboid with $l=7\text{cm},b=6\text{cm}$ and $h=5\text{cm}$.

3. Surface area of the walls of a cube having side $8\text{cm}$.

4. Surface area of the walls of a cuboid having $l=10\text{cm},b=5\text{cm}$ and $h=6\text{cm}$.

Q.

Determine the ratio of the lateral surface area to total surface area of a cube.

1. $\frac{3}{2}$

2. $\frac{2}{3}$

3. 1

4. $\frac{4}{9}$

Q. Find the lateral surface area of a cubical lamp of edge 10 cm.

1. 40 $c{m}^2$
2. 200 $c{m}^2$
3. 400 $c{m}^2$
4. 440 $c{m}^2$

Q. If a sheet measuring 1 m² costs ₹ 20, then the cost of the sheet required for making a cubical stand of edge 2.5 m, which is open from the top, is _______ .

1. ₹ 600
2. ₹ 625
3. ₹ 655
4. ₹ 675