Question
The sides of a right-angled triangle are in the ratio
12:13:5. If the total perimeter of the triangle is 120 cm, determine its area.Solution
Perimeter of triangle = 120
12x + 13x + 5x = 120
Or, 30x = 120
So, x = 4
Since, the triangle is right angled, the largest side is the hypotenuse.
So, area of triangle = (1/2) x base x height = (1/2) x 4 x 12 x 4 x 5 = 480 cm2
7    7       14    42   ?     840
...65    69   77 93  ?    189
203, 223, 198, 218, ?, 213
31Â Â Â 32Â Â Â Â 41Â Â Â Â 66Â Â Â 115Â Â Â Â ?
90     211     67     236     ?     265
...398Â Â Â 308Â Â Â 228Â Â Â 158Â Â Â 98Â Â Â ?
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...
32, ?, 41, 68, 132, 257
...3601 3602 1803 604 154 36
...979.001 + 4.0087 × 82.79 = ?
...
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