Question

10. The cost of painting a triangular piece of decoration wall, at the rate of 7 27 per sq m is T 81000. IF
the sides of the plot are in the ratio 13:12: 5, find its sides.​

Answer 1

Step-by-step explanation:

let the sides of the triangular plot =x

Perimeter =13x+12x+5x

=30x

Semi perimeter=30x/2

=15x

Area=√s(s-a)(s-b)(s-c)

3000 =√15x(15x-13x)(15x-12x)(15x-5x

3000 = √15x×2x×3x

3000=√3×5×x×2×x×3×x×5×2×x

3000= 3×5×2×x×x

3000=30x^2

x^2=3000/30

x^2=100

x=10cm

one side=13×10

=130cm

2nd side=12×10

=120 cm

3rd side=5×10 cm

=50 cm

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Answer 2

Step-by-step explanation:

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