Find the missing values. Diagonal ( d 1 ) Diagonal ( d 2 ) Area of Rhombus 12 cm 16 cm 27 mm 2025 mm 2 24 m 57 . 6 m

Case (i) Diagonal ( d 1 ) = 12 cm and Diagonal ( d 2 ) = 16 cm We know that, area of rhombus = 1 2 × d 1 × d 2 = 1 2 × 12 × 16 = 6 × 16 = 96 cm 2 Therefore, area of rhombus = 96 cm 2 Case (ii) Diagonal ( d 1 ) = 27 mm and area of rhombus = 2025 mm 2 We know that, area of rhombus = 1 2 × d 1 × d 2 ⇒ 2025 = 1 2 × 27 × d 2 ⇒ 4050 = 27 × d 2 ⇒ d 2 = 4050 27 ⇒ d 2 = 150 mm Case (iii) Diagonal ( d 1 ) = 24 m and Diagonal ( d 2 ) = 57 . 6 m We know that, area of rhombus = 1 2 × d 1 × d 2 = 1 2 × 24 × 57 . 6 = 12 × 57 . 6 = 691 . 2 m 2 Therefore, area of rhombus = 691 . 2 m 2 Diagonal ( d 1 ) Diagonal ( d 2 ) Area of Rhombus 12 cm 16 cm 96 cm 2 27 mm 150 mm 2025 mm 2 24 m 57 . 6 m 691 . 2 m 2

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 10

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IMPORTANT

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In the figure $A B C D$ find the area of the shaded region.

Important Questions on Area and Perimeter

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 11

In the figure $A B C D$ find the area of the shaded region.

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 12

Find the area of the parallelogram $P Q R S$ , if $P R = 24 cm$ and $Q U = S T = 8 cm$ .

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 13

The base and height of the triangle are in the ratio $3 : 2$ and its area is $108 {cm}^{2}$ . Find its base and height.

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 1

Find the area of following Rhombus.

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 1

Find the area of following Rhombus.

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 2

Find the missing values.

Diagonal $(d_{1})$	Diagonal $(d_{2})$	Area of Rhombus
$12 cm$	$16 cm$
$27 mm$		$2025 {mm}^{2}$
$24 m$	$57.6 m$

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 3

If length of diagonal of a rhombus whose area $216 sq . cm$ is $24 cm$ . Then find the length of second diagonal.

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Mathematics 7>Chapter 13 - Area and Perimeter>Exercise>Q 4

The floor of a building consists of $3000$ tiles which are rhombus shaped. The diagonals of each of the tiles are $45 cm$ and $30 cm$ . Find the total cost of polishing the floor, if cost per $m^{2}$ is $₹ 2.50$ .