Question

The area of rhombus is 360 sq. cm. If one diagonals is 40 cm, find the other diagonal

Answer 1

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Area Of Rhombus=

$\frac{1}{2} .d(1).d(2) = 360 \\ \\ \frac{1}{2} .4.d(2) \\ \\ d(2) = 18cm$

Answer 2

Given that

Area of rhombus ,

$a = 360 ~ cm^2$  

$\implies \dfrac 12 d_1 d_2 = 360 \\\\\implies \dfrac {1}{2} \cdot 40 \cdot d_2 = 360 \\\\\implies 20 d_2 = 360 \\\\\implies d_2 = 18 ~ cm$