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Question 82
In the following figure, ABC is an equilateral triangle and BCDE is a square whose each side is 8 cm long. Find the area of pentagon ABDEC in square cm.
Solution
side of square = 8 cm
As the side of square is coinciding with side of equilateral triangle so side of equilateral teiangle = 8 cm
Area of equilateral triangle = (√3/4 ) side^2
Area of square = side ^2
Total area = area of square + area of traingle
= ((√3/4) x64) + 64
=16(√3+4) sqr cm
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