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r = 35 cm, side of the square = a cm As per the question, 22/7 × r2+ a2= 5450 22/7 × (35)2+ a2= 5450 3850 + a2 = 5450 a2= 1600 a = 40cm Required Difference = 2 × 22/7 × 35 - 4 × 40 = 220 – 160 = 60cm
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