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Let the length and breadth of the rectangular field be ‘p’ metres and ‘q’ metres respectively Then, according to the question, 2 × (p + q) = 44 Or, (p + q) = 44/2 = 22…… (1) Also p × q = 114 We know, (p + q)2 = p2 + q2 + 2pq Or, p2 + q2 = 222 – 2 × 114 Or, p2 + q2 = 256 So, length of the diagonal of the rectangular field = √(length2 + breadth2) = √(p2 + q2) = √256 = 16 metres
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