Question

calculate the area of a triangle whose sides are 13cm, 5cm and 12cm

Answer 1

We will find the area of triangle by heron's formula.
a= 13cm, b= 5cm, c= 12cm
Area of triangle= √[s(s-a)(s-b)(s-c)]
s= (a+b+c)/2

s= (13+5+12)/2

s= 30/2
s= 15

putting values in the formula we get

=> ✓[(15)*(15-13)*(15-5)*(15-12)]
= ✓(15*2*10*3)
=> ✓900
=> 30cm²


hope this helps you