Question

the are of a triangle whose side are 13cm 14cm and 15cm​

Answer 1

Answer:

Given sides of triangle

a=13,b=14,c=15

Semi-perimeter s=

2

1

(a+b+c)=

2

1

(13+14+15)=21

Area, A =

s(s−a)(s−b)(s−c)

A=

21(21−13)(21−14)(21−15)

A=84 cm

2

Answer 2

Answer:

Side 1 = 13 cm

Side 2 = 14 cm

Side 3 = 15 cm

∴ Area of triangle = ( Heron's formula)

                              = 84 cm ²