Question

if a triangle has its sides in the ratio 2:3:5 and value of S is 35 cm, then what is the perimeter of the triangle

Answer 1

Hello friends!!

Here is ur answer :

Let the sides of triangle be 2x, 3x and 5x.

Semi Perimeter of triangle = 35 cm

According to question,

$\frac{a \: + b \: + c}{2} = 35$


$\frac{2x + 3x + 5x}{2} = 35$

$10x = 35 \times 2$


$10x = 70$


$x = \frac{70}{10}$

$x = 7$



Sides of triangle are :

2x = 2 × 7 = 14 cm

3x = 3 × 7 = 21 cm

5x = 5 × 7 = 35 cm


Perimeter of triangle = a + b + c

= 14 + 21 + 35

= 70 cm


HOPE IT HELPS YOU..

Answer 2

70 is the right answer
coz S is the sum which is half of sum of three sides of triangle and here S=35 then perimeter of triangle will be 70.