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ICSE Class X Math 2013 Solved Paper

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In the given figure, AB and DE are perpendicular to BC.
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Question : 15
Total: 46
Find the ratio of the area of △ABC : area of △DEC .
Solution:  
‌‌
‌ Area of ‌△ABC
‌ Area of ‌△DEC
=‌
AB2
DE2

‌(∵∆ABC∼∆DEC)
‌=‌
(6)2
(4)2
=‌
36
16
=‌
9
4
‌ or ‌9:4
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