Question

. The sides of a triangle are 16cm, 30cm, 34cm. Find its semi-perimeter.​

Answer 1

Answer:

the semi perimeter is 40 cm

Answer 2

Answer:

Given sides of triangles are a=16cm,b=30cm,c=34cm respectively

Semiperimeter s=

2

16+30+34

cm

=

2

80

=40cm

By heron's, area of the triangle is

s(s−a)(s−b)(s−c)

cm

2

=

40(40−16)(40−30)(40−34)

cm

2

=

40×24×10×6

cm

2

=

4×10×4×6×10×6

cm

2

=4×6×10cm

2

=240cm

we have to find half

240÷2 =120