The area of a square field is 400 square meters. If each side is increased by 25%, what will be the new area?
Show answer & explanation
Correct answer: A
Explanation
Area of square = 400 square meters
According to the formula:
area = side²
side = √400 = 20
New side = 20 × 1.25 = 25
New area = 25² = 625 square meters