The diagonals of a rhombus are 7-5 cm and 12 cm- Find its area-A- 40 cm 2B- 45 cm 2C- 15 cm 2D- 25 cm 2

The correct option is B 45 cm^2 Given d_1 = 7.5 cm and d_2=12 cm We know that, Area of rhombus = 1/2× d_1 d_2 = 1/2× 7.5 × 12 = 45 cm^2 Hence area of the rhomb ...

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Standard VII

Mathematics

Area of Rhombus

The diagonals...

Question

The diagonals of a rhombus are 7.5 cm and 12 cm. Find its area.

$40 c m^{2}$

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$15 c m^{2}$

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$25 c m^{2}$

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$45 c m^{2}$

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Solution

The correct option is D
$45 c m^{2}$

Given $d_{1} = 7.5 c m a n d d_{2} = 12 c m$
We know that,
Area of rhombus = $\frac{1}{2} \times d_{1} d_{2} = \frac{1}{2} \times 7.5 \times 12 = 45 c m^{2}$
Hence area of the rhombus is $45 c m^{2}$

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The diagonals of a rhombus are 7.5 cm and 12 cm. Find its area.

The correct option is D 45 cm2 Given d1=7.5 cm and d2=12 cm We know that, Area of rhombus = 12×d1d2=12×7.5×12=45cm2 Hence area of the rhombus is 45 cm2

The correct option is D
$45 c m^{2}$

Given $d_{1} = 7.5 c m a n d d_{2} = 12 c m$
We know that,
Area of rhombus = $\frac{1}{2} \times d_{1} d_{2} = \frac{1}{2} \times 7.5 \times 12 = 45 c m^{2}$
Hence area of the rhombus is $45 c m^{2}$