L.S.A of Cuboid

Q. The lateral surface area of a cuboid with length 5 cm, breadth 4 cm, and height 3 cm is .

1. $54c{m}^2$
2. $45c{m}^2$
3. $44c{m}^2$
4. $55c{m}^2$

Q.

Opposite faces of a cuboid are _________ in area.

Q.

The area of the four walls of a room is $108m^2$. If the height and length of the room are in the ratio of $2:5$ and the height and breadth are in the ratio $4:5$, then the area, in $m^2$, of the floor of the room is

Q.

You remove the lid of the can. What is the percent of change in the surface area of the can?

Q.

The length of a cuboid is twice its breadth. The breadth is twice its height. Find the ratio of the lateral surface area to the total surface area of the cuboid. Given that the height of the cuboid is $2\text{cm}$.

1. $7:2$

2. $7:4$

3. $3:7$

4. $3:8$

Q.

A box has length, breadth and height of 10 cm, 20 cm and 5 cm respectively. The lateral surface area of the box is ______.

1. 100 $c{m}^2$​
2. 200 $c{m}^2$​
3. 300 $c{m}^2$​
4. 400 $c{m}^2$​

Q. A box has length, breadth and height of 10 cm, 20 cm and 5 cm, respectively. Find lateral surface area of it.

1. 300

Q. From a sheet of 20 m$\times$10 m, 4 squares of side 2.5 m are cut out from the corners and made into a box.$\text{TSA}\mathrm{of}\mathrm{the}\mathrm{box}$ =

1. 175 m${}^2$
2. 100 m${}^2$
3. 150 m${}^2$

Q.

The total cost to paint external areas of all the 4 walls of a room with length, breadth and height as 10 cm, 20 cm and 5 cm respectively at the rate of ₹10 per sq. metre is ₹7000.

1. True

2. False

Q.

The total surface area of a box which is in the form of a cuboid whose dimensions are $l\times b\times h$ is__________.

1. $2(lh+bh)$

2. $2(lb+bh+hl)$

3. $(lh+bh)$

4. $(lb+bh+hl)$

Q.

A tank with length, breadth and height of $5,6$ and $3$ units respectively is open from the top. The cost of anti-microbial coating inside the tank at ₹ 10 per sq. unit is ______.

1. ₹ 1260

2. ₹ 960

3. ₹ 660

4. ₹ 1060

Q. Two edges of a rectangular sheet of paper having dimensions 14m $\times$ 7m are held together so that it forms a cylinder. Find the curved surface area(in sq. cm) of the cylinder.

1. 98

Q.

Which of the following option is correct?

S1 : Total surface area of a cuboid is the sum of areas of 4 faces excluding top and bottom faces.

S2 : Lateral surface area of a cuboid is the sum of areas of 4 faces excluding top and bottom faces.

S3 : Area of a face of a cuboid is of the form xy, where x and y are length and breadth respectively.

1. S1 and S3 are false

2. S2 and S3 are true

3. S1 , S3 are true

4. S2 , S3 are false