Question
The sides of a triangle measure 13 cm, 14 cm, and 15 cm.
Find the area of the triangle.Solution
Using Heron’s formula, s = (a + b + c) / 2, where s is the semi-perimeter. s = (13 + 14 + 15) / 2 = 21 cm. Area = √[s(s - a)(s - b)(s - c)] = √[21 * (21 - 13) * (21 - 14) * (21 - 15)] = √[21 * 8 * 7 * 6] = √7056 = 84 cm² Correct Answer: a) 84 cm²
What should come in place of (?) question mark in the following number series.
256, 128, 64, 32, 16, ?
5, 18, 39, ?, 105, 150
Find the missing number in the given number series.
2, 5, 11, 23, 47, ?What value should come in the place of (?) in the following number series?
?, 664, 706, 769, 853, 9584, 9, 24, 69, ?, 609
What will come in place of (?) Question mark in the given number series.
1, 2, 5, 14, 41, 122, ?
600 60 12 ? 1.44 0.72
36, 48, 24, 60, ?, 72
38% of 18/225 of 31/19 of 15225 =?
580 557 528 497 ? 419
