Find the perimeter and area of the quadrilateral ABCD in which
𝑨𝑩 = 𝟏𝟕 𝒄𝒎, 𝑨𝑫 = 𝟗 𝒄𝒎, 𝑪𝑫 = 𝟏𝟐 𝒄𝒎, ∠𝑨𝑪𝑩 = 𝟗𝟎° 𝒂𝒏𝒅 𝑨𝑪 = 𝟏𝟓 𝒄𝒎.

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64 m^{2} .

h_{1}

h_{2} .

What will be the area A of the quadrilateral in each case with their diagonal $d c m$ & the sum of their heights $(h_{1} + h_{2}) c m$ .

i) $d = 20, (h_{1} + h_{2}) = 10$

ii) $d = 15, (h_{1} + h_{2}) = 20$

iii) $d = 20, (h_{1} + h_{2}) = 25$

iv) $d = 40, (h_{1} + h_{2}) = 30$

64 m^{2} .

h_{1} a n d h_{2} .

H_{1}, H_{2}

\frac{H_{1} + H_{2}}{H_{1} . H_{2}} =

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