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The semi-perimeter of the triangle is given by: s = (AB + BC + AC) / 2 s = (15 + 20 + 25) / 2 = 30 cm Now, using Heron’s formula: Area = √[s(s − AB)(s − BC)(s − AC)] Area = √[30(30 − 15)(30 − 20)(30 − 25)] Area = √[30 × 15 × 10 × 5] Area = √22500 Area = 150 cm² Correct answer: a) 150 cm²
1648, 1690, 1741, 1807, 1938, 2140
178, 184, 196, 216, 246, 286
640 1920 240 720 92 270
3, 15, 35, 63, 99, 143
2592 1300 656 331 169.5 88.75
...Find the wrong number in given number series.
1490, 1377, 1294, 1211, 1138, 1075
119, 145, 186, 249, 340, 483
15, 30, 30, 20, 10, 8
135, 148, 109, 174, 87, 200
1001, 934, 863, 790, 711, 630, 539