Question

Work out the area of the trapezium ABDE.
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Answer 1

Answer:

30cm²

Step-by-step explanation:

Let DE be x

As ∆CDB~ ∆CEA, by AA similarity,

Angle C is common and two perpendicular are there. So,

6/9 = 8/(8+x)

x+8 = 12

x = 4cm

Area of trapezium ABDE = (6+9)4/2

= 15*2 = 30 cm²