Q. 17 B3.8( 11 Votes )

If the length of A. 9√3 sq.cm.

B. 18√3 sq.cm.

C. 36√3 sq.cm.

D. 6√3 sq.cm.

Answer :


∆ABD and ∆CBD are equilateral triangles.


You may know that the height of an equilateral triangle is .side


AO = OC = .AB


=.6


AC (diagonal) = AO+OC


= 6


In ∆AOB, AB2=BO2+AO2


36 = BO2 +( .6)2


BO2=36−27


BO2 = 9


BO = 3cm


The diagonal AC = 2×3


= 6cm


Hence, the area of the rhombus=×6×6


=18 sq. cm

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Champ Quiz | Area of TriangleChamp Quiz | Area of TriangleChamp Quiz | Area of Triangle53 mins
Champ Quiz | QuadrilateralChamp Quiz | QuadrilateralChamp Quiz | Quadrilateral50 mins
Quiz | Area and ParallelogramQuiz | Area and ParallelogramQuiz | Area and Parallelogram46 mins
Quiz | Area of Parallelogram and TrianglesQuiz | Area of Parallelogram and TrianglesQuiz | Area of Parallelogram and Triangles43 mins
NCERT |  Imp Qs on Area of Parallelogram And TrianglesNCERT |  Imp Qs on Area of Parallelogram And TrianglesNCERT | Imp Qs on Area of Parallelogram And Triangles44 mins
Smart Revision | QuadrilateralsSmart Revision | QuadrilateralsSmart Revision | Quadrilaterals43 mins
Surface Area and Volume of ConeSurface Area and Volume of ConeSurface Area and Volume of Cone24 mins
Surface Area of Cube and CuboidSurface Area of Cube and CuboidSurface Area of Cube and Cuboid49 mins
Quiz | Basics of QuadrilateralsQuiz | Basics of QuadrilateralsQuiz | Basics of Quadrilaterals36 mins
Surface Area and Volume of SpheresSurface Area and Volume of SpheresSurface Area and Volume of Spheres40 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

Area of field in West Bengal Mathematics

The base of a parWest Bengal Mathematics

If perimeter of aWest Bengal Mathematics

The area of fieldWest Bengal Mathematics

In a quadrilateraWest Bengal Mathematics

In parallelogram West Bengal Mathematics

The length of oneWest Bengal Mathematics

If the lengWest Bengal Mathematics

The length West Bengal Mathematics

If the lengWest Bengal Mathematics