Question

sides of a triangle are 13 cm, 14cm and 15 cm then area of the triangle is =?​

Answer 1

Answer:

84 cm

Step-by-step explanation:

by heron's formula

a = 13

b= 14

c = 15

semi perimeter = 1/2 (a+b+c) = 1/2 (13+14+15)=21

Area = √s(s-a)(s-b)(s-c)

area = √21(21-13)(21-14)(21-15)

area = 84cm2