A figure is in the form of a quadrilateral ABCD its
area is 165 cm. Find the length of the perpendicular
drawn from D on AC if AC = 15 cm and length of
perpendicular from B on AC is 12 cm.
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Area of quadrilateral = 1/2 d( h1 + h2 )
165 cm^2 = 1/2 × 15 ( 12 + d )
330 = 180 +15d
15d = 150
d = 150/50
d = 10cm
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