Question

The perimeter of a triangle is 30cm. Its sides are in the ratio1:3:2,
then find its area.

I will mark you the brainliest

Answer 1

Step-by-step explanation:

Let common multiplayer be x

x+3x+2x= 30

6x=30

x= 5

So sides of triangle are 5,10,15 cm

Now we can calculate are by herons formula

s= a+b+c/2

= 30/2=15

area of triangle= (under root )s(s-a) (s-b) (s-c)