Question

slides of a triangle are in the ratio 12 17 25 and its perimeter 540 cm. find its semi perimeter​

Answer 1

Answer:

Let the common ratio between the sides of the given triangle be x. Therefore, the side of the triangle will be 12x, 17x, and 25x. Sides of the triangle will be 120 cm, 170 cm, and 250 cm. Therefore, the area of this triangle is 9000 cm².

Answer 2

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Given:

Ratio = 12:17:25

Perimeter = 540cm

To find:

Semi perimeter

Solution:

Perimeter = sum of all sides

Let sides = 12x, 17x, 25x

12x+17x+25x

54x

$\tt \: Semi \: perimeter = \frac{a + b + c}{2} \\ \tt \: = \frac{12x + 17x + 25x}{2} \\ \tt \frac{54x}{2} \\ \tt \: = 27x$