Question

the perimeter of a triangular field is 135cm and its sides are in the ratio 25:17:12. find ots area. pls give the ans​

Answer 1

Step-by-step explanation:

Given Perimeter of △=135 cm

So, semiperimeter (s)=135/2=67.5 cm

Let the sides of △ be 25x,17x and 12x

⇒ 25x+17x+ 12x=135 cm

⇒54x=135 cm

⇒x=2.5

So, sides are: 25×2.5=62.5 cm

17×2.5=42.5 cm

12×2.5=30 cm

Heron;s formula=√s(s−a)(s−b)(s−c), where a,b and c are the sides of △.

=√67.5 ×(67.5−62.5)×(67.5−42.5)×(67.5−30)

=√67.5×5×25×37.5

=562.5 cm²

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Answer 2

Answer:

My friend, 562.5 cm² is the correct answer.

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