Class 9 Exam  >  Class 9 Questions  >  How can we find area of a rhombus using heron... Start Learning for Free
How can we find area of a rhombus using herons formula
Most Upvoted Answer
How can we find area of a rhombus using herons formula
Rhombus:
A rhombus is a quadrilateral with four sides of equal length. The opposite angles of a rhombus are equal, and its diagonals bisect each other at right angles.

Heron's Formula:
Heron's formula is used to find the area of a triangle when the lengths of its sides are known. It states that the area (A) of a triangle with sides of length a, b, and c can be calculated using the formula:

A = sqrt(s(s-a)(s-b)(s-c))

where s is the semi-perimeter of the triangle, given by:

s = (a + b + c) / 2

Area of a Rhombus using Heron's Formula:
To find the area of a rhombus using Heron's formula, we can consider the rhombus as two congruent triangles and find the area of one of them. The formula becomes:

A = 2 * (Area of one triangle)

Step-by-Step Calculation:
1. Determine the lengths of the diagonals: The diagonals of a rhombus are perpendicular bisectors of each other and divide the rhombus into four congruent right triangles. Let d1 and d2 be the lengths of the diagonals.

2. Calculate the side length: Since the diagonals bisect the angles of the rhombus, we can use trigonometry to find the side length. Let θ be the measure of one of the angles.

- Divide one of the triangles into two right triangles by drawing a perpendicular from one of the vertices to the opposite diagonal.
- The length of half of one diagonal is the adjacent side, and the side length of the rhombus is the hypotenuse.
- Use the cosine function: cos(θ) = (d1/2) / s, where s is the side length.

3. Calculate the area of one triangle:
- Calculate the semi-perimeter: s = 2 * s = 2 * (side length)
- Use Heron's formula to find the area of one triangle: A = sqrt(s(s-a)(s-a)(s-a)).

4. Calculate the area of the rhombus:
- Multiply the area of one triangle by 2: A = 2 * A.

Example:
Let's consider a rhombus with diagonals of lengths 6 cm and 8 cm.

1. Determine the side length:
- Let d1 = 6 cm and d2 = 8 cm.
- The side length can be found using the cosine function: cos(θ) = (6/2) / s.
- Rearranging the formula, we get s = (6/2) / cos(θ).

2. Calculate the area of one triangle:
- Calculate the semi-perimeter: s = 2 * (6/2) / cos(θ).
- Use Heron's formula to find the area of one triangle: A = sqrt(s(s-a)(s-a)(s-a)).

3. Calculate the area of the rhombus:
- Multiply the area of one triangle by 2: A = 2 * A.

Note:
Make sure to use appropriate units for measurements and round the final answer to the desired
Community Answer
How can we find area of a rhombus using herons formula
We will firstly make a diagonal that will divide the rhombus into 2 triangles.Then we will find the length of the diagonal using pythagorus theorem.After that we will find the area of both the triangle using Heron's formula.
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
Explore Courses for Class 9 exam

Top Courses for Class 9

How can we find area of a rhombus using herons formula
Question Description
How can we find area of a rhombus using herons formula for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about How can we find area of a rhombus using herons formula covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How can we find area of a rhombus using herons formula.
Solutions for How can we find area of a rhombus using herons formula in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of How can we find area of a rhombus using herons formula defined & explained in the simplest way possible. Besides giving the explanation of How can we find area of a rhombus using herons formula, a detailed solution for How can we find area of a rhombus using herons formula has been provided alongside types of How can we find area of a rhombus using herons formula theory, EduRev gives you an ample number of questions to practice How can we find area of a rhombus using herons formula tests, examples and also practice Class 9 tests.
Explore Courses for Class 9 exam

Top Courses for Class 9

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev