If each side of the square is increased by 50%, what will be the ratio between the new area and the original area of the square?
Answer & explanation
Correct answer: option 3
Let the side of square be 10 cm, area of square = (side)2 = (10)2 = 100 cm2
Side of square is increased by 50% so, side = 15 cm, area of square = (15)2 = 225 cm2
Ratio of new area and old area:
225 : 100
9: 4