2018 · Q70
In a room whose floor is a square of side 10 m, an equilateral triangular table of side 2 m is placed. Four book-shelves of size 4 m × 1 m × 9 m are also placed in the room. If half of the rest of the area in the room is to be carpeted at the rate of Rs. 100 per square metre, what is the cost of carpeting (approximately)?
Elementary MathematicsMensuration
- ARs. 7,600
- BRs. 5,635
- CRs. 4,113
- DRs. 3,200
Explanation
Floor area 100 m² minus the table (√3 ≈ 1.73 m²) minus the four shelves (16 m²) leaves ≈ 82.27 m². Half of that, ≈ 41.13 m², at Rs. 100/m² costs ≈ Rs. 4113, option (C).