(A) The area of a rhombus is calculated by the formula: $\text{Area} = \frac{1}{2} \times d_1 \times d_2$,where $d_1$ and $d_2$ are the lengths of the

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$\frac{1}{2} \times$ product of its diagonals

(A) The area of a rhombus is calculated by the formula: $\text{Area} = \frac{1}{2} \times d_1 \times d_2$,where $d_1$ and $d_2$ are the lengths of the two diagonals of the rhombus.Therefore,the area of a rhombus is $\frac{1}{2} \times$ product of its diagonals.

Class 9 Mathematics Heron’s Formula Mix Examples - Heron’s Formula

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Area of a rhombus $=$ ............

A
$\frac{1}{2} \times$ product of its diagonals
B
$\frac{3}{4} \times$ product of its diagonals
C
$\frac{2}{5} \times$ product of its diagonals
D
$\frac{3}{2} \times$ product of its diagonals

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Heron’s Formula

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Mix Examples - Heron’s Formula

In a quadrilateral $ABCD$,$AB = 9 \, cm$,$BC = 40 \, cm$,$CD = 28 \, cm$,$DA = 15 \, cm$,and $\angle B = 90^{\circ}$. Find its area. (in $, cm^2$)

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Write True or False and justify your answer.
The cost of levelling the ground in the form of a triangle having the sides $51 \, m$,$37 \, m$,and $20 \, m$ at the rate of $Rs \, 3$ per $m^2$ is $Rs \, 918$.

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The base of a right triangle is $8 \, cm$ and its hypotenuse is $10 \, cm$. Its area will be (in $cm^2$):

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The diagonals of a rhombus are $16\,cm$ and $30\,cm$. Find its perimeter. (in $,cm$)

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According to Heron's formula,the area of an equilateral triangle having each side $a$ is ..........

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Area of a rhombus $=$ ............

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In a quadrilateral $ABCD$,$AB = 9 \, cm$,$BC = 40 \, cm$,$CD = 28 \, cm$,$DA = 15 \, cm$,and $\angle B = 90^{\circ}$. Find its area. (in $, cm^2$)

Write True or False and justify your answer.The cost of levelling the ground in the form of a triangle having the sides $51 \, m$,$37 \, m$,and $20 \, m$ at the rate of $Rs \, 3$ per $m^2$ is $Rs \, 918$.

The base of a right triangle is $8 \, cm$ and its hypotenuse is $10 \, cm$. Its area will be (in $cm^2$):

The diagonals of a rhombus are $16\,cm$ and $30\,cm$. Find its perimeter. (in $,cm$)

According to Heron's formula,the area of an equilateral triangle having each side $a$ is ..........

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Write True or False and justify your answer.
The cost of levelling the ground in the form of a triangle having the sides $51 \, m$,$37 \, m$,and $20 \, m$ at the rate of $Rs \, 3$ per $m^2$ is $Rs \, 918$.