Biththi wala diga manala usen wadi karanapan
Wall Length X Wall Height = Total Wall Square-age
Eelagata Janel dorawal wala diga palla wena wenama wadi karala ekathu karaganna..
Window 1 => Length X Width
Window 2 => Length X Width
Window 3 => Length X Width
Door 1 => Length X Width
Door 2 => Length X Width
*****Total Square-age of Doors and Windows*****
Total Wall Square-age - Total Square-age of Doors and Windows = ANSWER*****[/B]