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As triangle ABCD =triangle PQRS
side of the square PQRS= 20cm
area of triangle PQRS = S×S
= 20×20
=400 sq cm
let the sides of triangle ABCD be 2x and 3x
= area of the triangle=S×S
400= 2x × 3x
400= 6x^2
400÷6 = x^2
66.66 =x^2
√66.66= x
8.16= x
2x= 2 × x = 2×8.16=16.32
3x= 3×x= 3 × 8.16= 24.48
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