Question

find the area of triangle whose sides are 18 centimetre 24 cm and 30 cm

Answer 1

area of triangle = 18+24+30
=> 72. cm^2

Answer 2

Step-by-step explanation:

First you need to find the semi-perimeter of the triangle.

S=(18+24+30)/2

 =36

Now you need to use Heron's formula to find the area.

Area=√s(s-a)(s-b)(s-c)

       = √36*(36-18)(36-24)(36-30)

       =3*2*3*3*2*4*3

       =1296cm²