Class 8 Exam > Class 8 Questions > A room has dimensions of 5 m × 4 m × 3 m. Wha... Start Learning for Free
A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?
- a)60 m²
- b)66 m²
- c)54 m²
- d)78 m²
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A room has dimensions of 5 m × 4 m × 3 m. What is the total surface ar...
Understanding Room Dimensions
The room has dimensions of 5 m (length) × 4 m (width) × 3 m (height). To find the total surface area while excluding the floor, we will calculate the areas of the four walls and the ceiling.
Calculating the Areas of Walls
1. Area of Two Longer Walls (Length × Height):
- Each wall's area = Length × Height = 5 m × 3 m = 15 m²
- Total for two walls = 2 × 15 m² = 30 m²
2. Area of Two Shorter Walls (Width × Height):
- Each wall's area = Width × Height = 4 m × 3 m = 12 m²
- Total for two walls = 2 × 12 m² = 24 m²
Calculating the Area of the Ceiling
3. Area of the Ceiling (Length × Width):
- Ceiling area = Length × Width = 5 m × 4 m = 20 m²
Summing Up the Areas
4. Total Surface Area Calculation:
- Total wall area = Area of longer walls + Area of shorter walls = 30 m² + 24 m² = 54 m²
- Adding the ceiling area = Total wall area + Ceiling area = 54 m² + 20 m² = 74 m²
However, since we need to exclude the floor, we only consider the walls and the ceiling:
Final Calculation
- Total area excluding the floor = 54 m² (walls) + 20 m² (ceiling) = 74 m²
Conclusion
The total surface area of the room, excluding the floor, is 54 m². Therefore, the correct answer is option 'C'.
The room has dimensions of 5 m (length) × 4 m (width) × 3 m (height). To find the total surface area while excluding the floor, we will calculate the areas of the four walls and the ceiling.
Calculating the Areas of Walls
1. Area of Two Longer Walls (Length × Height):
- Each wall's area = Length × Height = 5 m × 3 m = 15 m²
- Total for two walls = 2 × 15 m² = 30 m²
2. Area of Two Shorter Walls (Width × Height):
- Each wall's area = Width × Height = 4 m × 3 m = 12 m²
- Total for two walls = 2 × 12 m² = 24 m²
Calculating the Area of the Ceiling
3. Area of the Ceiling (Length × Width):
- Ceiling area = Length × Width = 5 m × 4 m = 20 m²
Summing Up the Areas
4. Total Surface Area Calculation:
- Total wall area = Area of longer walls + Area of shorter walls = 30 m² + 24 m² = 54 m²
- Adding the ceiling area = Total wall area + Ceiling area = 54 m² + 20 m² = 74 m²
However, since we need to exclude the floor, we only consider the walls and the ceiling:
Final Calculation
- Total area excluding the floor = 54 m² (walls) + 20 m² (ceiling) = 74 m²
Conclusion
The total surface area of the room, excluding the floor, is 54 m². Therefore, the correct answer is option 'C'.
Free Test
FREE
| Start Free Test |
Community Answer
A room has dimensions of 5 m × 4 m × 3 m. What is the total surface ar...
The total surface area of the walls is calculated as 2(l × h) + 2(b × h). Using the dimensions, Total Surface Area = 2(5 × 3) + 2(4 × 3) = 30 + 24 = 54 m².
 | Explore Courses for Class 8 exam |  |
Top Courses for Class 8View all
Top Courses for Class 8
Question Description
A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? for Class 8 2026 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer?.
A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? for Class 8 2026 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer?.
Solutions for A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 8. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free.
Here you can find the meaning of A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer?, a detailed solution for A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A room has dimensions of 5 m × 4 m × 3 m. What is the total surface area of the room (excluding the floor)?a) 60 m²b) 66 m²c) 54 m²d) 78 m²Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 8 tests.
| Explore Courses for Class 8 exam | |
Top Courses for Class 8
Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
