Question
What is the difference between (in m2) the
area of a circular field of radius 21 metres and area of a rectangular piece of land having its dimensions as 35 metres × 25 metres?Solution
Area of the circular field = π × radius2 = (22/7) × 21 × 21 = 1386 m2 Area of the rectangular piece of land = length × breadth = 35 × 25 = 875 m2 So, difference in area = 1386 – 875 = 511 m2
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