Question

if triangle ABC is similar to triangle DEF , BC=4cm , EF=5cm, and area of triangle = 80 sq.cm. then area of triange DEF = ?

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

ar(∆ABC)/arDEF=BC^2/EF^2

80/ar(∆DEF)=4^2/5^2

80/ar∆DEF=16/25

ar∆DEF=(25×80)/16=25×5=125sq.cm

we know that ratio of area of two similar triangles is equal to ratio of square of their corresponding sides.