Question

side of a triangle is 6cm , 15cm and 11 cm . find area of triangle by Heron’s formula

Answer 1

Answer:

The area of the given triangle is 20$\sqrt{2}$$cm^{2}$

Step-by-step explanation:

Semiperimeter= 16cm

Area of the triangle=$\sqrt{S(S-a)(S-b)(S-c)}$

                                =$\sqrt{16(16-15)(16-6)(16-11)}$

                                =20$\sqrt{2}$$cm^{2}$

                         

Answer 2

Answer:

Area of triangle=8.438

Step-by-step explanation:

let sides of triangle 6,15,11 be a,b,c respectively.

s=(6+15+11)/3= 10.67

area of triangle=√s(s-a)(s-b)(s-c)

=√10.67(4.67)(4.33)(0.33)=√71.2(approx)=8.438(approx)