1.

The perimeter of a triangle is 36 cm and the sides are in the ratio 2 : 5 : 5 ,thenfind the area of the triangle .​

Answer»

Answer:

Let sides are a, b and c, a = 3x, b = 4x, c = 5x

Perimeter = a + b + c

=> 36 = 3x + 4x + 5x

=> X = 3

a = 9 CM, b = 12 cm and c = 15 cm

Step-by-step explanation:

Area =√s(s-a)(s-b)(s-c)

= √18(18-9)(18-12)(18-15)

=√18×9×6×3

=54cm2



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