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?

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?

A 143

B 225

C 250

D 224

Solution

Correct Answer: 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