Question

The sides of triangle are in ratio 13:14:15 and it's perimeter is 84. Find the area of triangle​

Answer 1

Answer:

Step-by-step explanation: I think it will help you

Answer 2

Answer:

336 sq.unit

Step-by-step explanation:

Let the sides of triangle be:13x, 14x, 15x

now,

13x + 14x + 15x = 84

42x = 84

x = 2

now on putting value

13x = 13×2 = 26 units

14x = 14×2 = 28 units

15x = 15×2 = 30 units

now we have all the sides,

using herons formula,

semiperimeter = 84÷2 = 42units

so,

area = √[42(42-26)(42-28)(42-30)]

=√[42×16×14×12]

=√[112896]

=336 sq. units