Question
The total area of a circle and a square is 6350
cm2, the diameter of the circle is 70cm, what is the difference between the circumference of the circle and perimeter of a square?Solution
Radius of a circle = 35cm Side of a square = a According to the question, Ο r2 + a2 = 6350 22/7 Γ 35 Γ 35 + a2 = 6350 3850 + a2 = 6350 a = 2500 a = 50cm Required difference = 2 Οr β 4aΒ = 2 Γ 22/7 Γ 35 β 4 Γ 50Β = 220 β 200Β = 20 cm
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