Question
Area of a square is 10% less than that of a rectangle
whose length and breadth are 35 cm and 14 cm respectively. Find the perimeter of the square.Solution
ATQ, Area of the rectangle = 35 × 14 = 490 cm² Area of the square = 90% of 490 = 0.9 × 490 = (9/10) × 490 = 441 cm² Side of the square = √441 = 21 cm Perimeter of the square = 4 × 21 = 84 cm
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