Question
The perimeter of a rectangular field is 44 metres and
its area is 61.5 m2 . What is the length of the diagonal of this field?Solution
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 = 61.5 We know, (p + q)2 = p2 + q2 + 2pq Or, p2 + q2 = 222 – 2 × 61.5 Or, p2 + q2 = 361 So, length of the diagonal of the rectangular field = √(length2 + breadth2) = √(p2 + q2) = √361 = 19 metres
366 276 196 126 66 ?
7 98 644 3145 12596 37797
...25, 200, 40, ?, 64, 512
D irection: Which of the following will replace ‘?’ in the following series
9, ‘?’, 1242, 1581, 1783
...80, 255, 624, ?, 2400, 4095
A series is 11, 20, 42, 82, 166, 330
If another series 4, a, b, c, d, 106 follows the same pattern as the given number series, then find the appr...
If 43 34 x 36 39 38
Then, (x/2) + 0.5 + x = ?
...6 16 116 566 2272 6814
11 a�...
4 ? 113 449 1343 2681
...3 15 35 63 99 ?
