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Question
In ∆ABC, B – D – C and BD = 7, BC = 20, then find the following ratio.
`(A(triangleABD))/(A(triangleABC))`
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Solution
In ∆ABC, B – D – C and BD = 7, BC = 20
As ΔABD and ∆ABC have the same height.
∴ Areas of triangles with the same height are proportional to their corresponding bases.
`(A(triangle ABD))/(A(triangle ABC)) = (BD)/(BC)`
= `7/20`
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If ΔABC ∼ ΔDEF, length of side AB is 9 cm and length of side DE is 12 cm, then find the ratio of their corresponding areas.
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