Question

Find the area of a triangle if the sides of a triangle are 5cm 10cm and 15cm​

Answer 1

Step-by-step explanation:

formula=sum of all sides

then,

(5cm+10cm)+15cm

15cm+15cm

30cm

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Answer 2

Answer:

The area is: 0 cm²

Step-by-step explanation:

It's given that,

The three sides of a triangle are:

5cm,

10cm,

15cm,

We are gonna use Heron's Formula:

Area = √(s(s-a)(s-b)(s-c))

Here,

S = Half perimeter, or, $\frac{Perimeter}{2}$

a,b,c = Length of three sides

        = 5, 10, 15

The perimeter = The sum of the sides

                         = a + b + c

                         = 5 + 10 + 15 cm

                         = 30 cm

So, S = $\frac{Perimeter}{2}$

         = 30/2 cm

         = 15 cm

Now, let's put the values:

Area = √(s(s-a)(s-b)(s-c))

        = √(15×(15-5)×(15-10)×(15-15))

        = √(15×10×5×0)

        = √0

        = 0

              (ANS)

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