Question

7. The sides of a triangle are 13 cm, 14 cm and 15 cm.
a) Find the perimeter of the triangle
b) Find Area of the triangle
c) Find Inradius of the triangle​

Answer 1

Step-by-step explanation:

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