If the side length of a square decreases from 7 cm to 5 cm, find the percentage decrease in its area. (Rounded off to 2 decimal places.)
Given:
Original side of square = 7 cm
New side of square = 5 cm
Find: Percentage decrease in area
Formula Used:
Area of square = side2
Percentage decrease =
Solution:
Original area = 72 = 49 cm2
New area = 52 = 25 cm2
Decrease in area = 49 − 25 = 24 cm²
Percentage decrease = ≈ 48.98%
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90 Mins English English100 Questions100 Marks90 Mins English English100 Questions100 Marks90 Mins EnglishIf the side length of a square decreases from 7 cm to 5 cm, find the percentage decrease in its area. (Rounded off to 2 decimal places.)
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