Question
Find the perimeter of a rectangle whose length is 30 cm
more than the side of a square whose perimeter is 64 cm. The breadth of rectangle is 18 cm less than its length.Solution
ATQ, Side of square = (64 ÷ 4) = 16 cm Length of rectangle = 16 + 30 = 46 cm Breadth of rectangle = 46 − 18 = 28 cm Therefore, perimeter of rectangle = 2 × (46 + 28) = 148 cm
Choose the missing term.
3F, 6G, 11I, 18L,?
60, 100, 160, 240, ?, 460
1 12 31 58 93 ?
32, 48, 72, 108, ?, 243
36   37    33   42    ?      51    15
...1500 Â Â Â 150Â Â Â 30Â Â Â ? Â Â Â Â 3.6Â Â Â Â 1.8
9 28 83 250 ? 2248
4    9    28    99    ?   2105   12660
...12, 25, 51, ?, 207, 415Â
18    ?    20    13     22     11