Step 1: Wall Area Calculation

We calculate the wall area by multiplying Length × Height: 10 × 10 = 100 sq ft

Step 2: Paintable Area

We subtract the area of doors and windows from the total wall area to get the actual paintable area.

Step 3: Paint Calculation

Paint required = (Paintable Area × Number of Coats) ÷ Paint Coverage per liter

Step 4: Can Optimization

We optimize the paint can combination to minimize waste and cost using 10L, 4L, and 1L cans.

• 10L Cans: 0 cans = 0L
• 4L Cans: 0 cans = 0L
• 1L Cans: 2 cans = 2L

Key Assumptions

• • Default paint coverage: 120 sq ft per liter
• • Average paint cost: ₹400 per liter
• • Standard door: ~21 sq ft (7' × 3')
• • Standard window: ~15 sq ft (5' × 3')
• • Premium paints may have higher coverage