Lubna has purchased a square sheet of plywood of 289 square feet area. To cover a wall she must cut off two feet from a side. What is the area, in square feet, of the wall?
সমাধান
সঠিক উত্তর: Option B
side of the genuine plywoord = sqrt(289) = 17
after reducing 2 ft, it will be 15 ft
the new size will be 15X15 =225 sqft
