(1) Two identical cubes each of total surface area of 6cm square are joined end to end which of following is the total surface area of the cupoid so formed - (1) 12cm square (2) 18cm square (3) 10cm square (4) 8cm square?

Question

Answer

(3) 10 cm square

Answer

Analysis:
The cube has 6 faces, each with an area of 1 cm square. When two identical cubes are joined end to end, they form a cuboid with a total surface area that includes the outer faces of both cubes as well as the newly formed faces where they are joined.

Solution:
- Total Surface Area of 1 Cube:
Each cube has a total surface area of 6 cm square (6 faces with an area of 1 cm square each).
- Total Surface Area of 2 Cubes:
When the cubes are joined end to end, the total surface area is doubled, as both cubes contribute their outer faces as well as the newly formed faces.
- Calculating Total Surface Area of Cuboid:
The total surface area of the cuboid formed by joining two cubes end to end is 2 times the total surface area of one cube.
- Formula:
Total Surface Area of Cuboid = 2 * Total Surface Area of 1 Cube
- Substitute:
Total Surface Area of Cuboid = 2 * 6 cm square = 12 cm square

Therefore, the total surface area of the cuboid formed by joining two identical cubes end to end is 12 cm square.

Similar Class 9 Doubts

The diameter of a cuboid are in the ratio of 3:4:5 and total surface area is 188 cm . find the diameter of cuboid?

Three equal cubes are placed adjacently in a row. Find the ratio of total surface area of the new cuboid to that of the sum of the surface areas of the three cubes

3cubes of side 5cm are joined end to end and forms a cuboid.what is the surface area of the cuboid?

The length of a cuboid is twice its breadth. The breadth is twice its height. Find the ratio of lateral surface area to the total surface area of cuboid. Given that the height of cuboid is 2cm? (The answer is 3:7) Can you explain me this.?

A cuboid has a total surface area of 384 cm^2.The sum of the squares of its length, breadth and height is 192 cm^2.The length of the cuboid is?

Top Courses for Class 9View all

Science Class 9

Social Studies (SST) Class 9

Mathematics (Maths) Class 9

English Grammar Advanced

English Class 9

Top Courses for Class 9

Top Courses for Class 9

Suggested Free Tests

Related Content

Class 9 Study Material

Class 9 Subjects

Competitive Examinations for Class 9

NCERT Books

NCERT Solutions

Reference Books for Class 9

Other Popular Exams

Company