Area with Herons Formula
Area with Herons Formula
Heron's Formula : In some cases, length of each side of the triangle are given but height of the triangle is neither given nor we are able to find in any way, then to find the area of such type of triangle, we use Heron's formula which is given below.
Area of triangle = , where a,b,c are length of the sides of a triangle and s is the semi-perimeter of the triangle i.e.
Example: Find the area of a quadrilateral ABCD in which AB = 3 cm, BC = 4 cm, CD = 4 cm, DA = 5 cm and AC = 5 cm. Solution : We divide the quadrilateral ABCD in two triangle ABC and ACD For Area ( = Similarly, for a = 5 cm, b = 5 cm, c = 4 cm and s = Area ( =
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The side of a triangle are 13 m, 14 m and 15 m, area of the triangle is: | |||
| Right Option : C | |||
| View Explanation | |||
If every side of a triangle is doubled, then the area of the new triangle is 'k' times the area of the old one. The value of k is __________________. | |||
| Right Option : D | |||
| View Explanation | |||
If the sides of a triangle are doubled, then its area ______________. | |||
| Right Option : D | |||
| View Explanation | |||
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