Question

sides of triangle are 26cm , 28cm , 30cm , find area of triangle ️​

Answer 1

Answer:

Perimeter of Triangle

2S=26+28+30=84

⇒S=42cm

Area

√s(s−a)(s−b)(s−c)

(Heron's formula)

Area =

√42(42−26)(42−28)(42−30)

=

√42×16×14×12

Area=336cm²

Step-by-step explanation:

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Answer 2

$\sqrt{x}$Answer:

let us assume

a = 26 cm (one side of tringle)

b = 28 cm (other side of tringle)

b = 30 cm (third side of tringle)

method to solve this problem if three sides are given

by using heron's  formula

area of tringle =  $\sqrt{s(s-a)(s-b)(s-c)}$

         where  s = $\frac{(a+b+c)}{2}$ =$\frac{26+28+30}{2}$ = 42 cm

                      =$\sqrt{42(42-26)(42-28)(42-30)}$  

and we obtained final answer = 336$cm^{2}$

Step-by-step explanation: