Question
Area of a rectangle is 96 m2 When the length
of the same rectangle increased by 6 m and the breadth decreased by 3 m, then the area of the rectangle decreases by 30 m2 . What is the perimeter of a square whose sides are equal to the length of rectangle?Solution
Area of rectangle = 96 lb = 96 ….(i) According to question lb – (l + 6) (b - 3) = 30 => lb-lb + 3l – 6b + 18 = 30 => 3l-6b = 12 => l - 2b - 4 = 0 => l = 2(b + 2) …(ii) By solving equations (i) and (ii), we get l = 16m, b = 6m The side of square = l = 16m Perimeter of a square = 4 × 16 = 64 mÂ
7, -26, -45, -60, -69, -73
6.5, 11, 22, 25.5, 51, 54.5
Find the wrong number in the given number series.
216, 112, 60, 34, 21, 14
- Find the wrong number in the given number series.
5, 10, 20, 35, 80, 160 27, 35, 51, 75, 109, 147
112, 119, 133, 154, 180, 217
324, 314, 294, 264, 224, 184
Find the wrong number in the given number series.
2, 6, 24, 96, 285, 568, 567
12, 3.6, 18, 0.72, 0.432, 0.3024
Direction: Find the wrong number in given number series.
958, 954, 981, 948, 1299, 1218