Question
What is the difference between (in m2) the
area of a circular field of radius 28 metres and area of a rectangular piece of land having its dimensions as 60 metres × 40 metres?Solution
Area of the circular field = π × radius2 = (22/7) × 28 × 28 = 2464 m2 Area of the rectangular piece of land = length × breadth = 60 × 40 = 2400 m2 So, difference in area = 2464 – 2400 = 64 m2
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