Discussion
A room with inner-to-inner dimensions 4.8 m × 4.8 m is built by 20 cm thick walls all around. Calculate the central line length of walls.
Answer: B
The centre line of a wall lies half a wall thickness outside the inner face. For a room of 4.8 m x 4.8 m inner dimensions with 20 cm thick walls, each side of the centre-line rectangle is 4.8 + 0.2 = 5.0 m, so
\[ L = 4 \times 5.0 = 20\ \text{m} \]The value 22.6 m would result from adding the thickness twice to each side (the outer dimension, 5.2 m, around), and 15.9 m and 14 m are not consistent with these dimensions.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development