Answer:
Given, the sides of a triangle are 5cm,12cm and 13cm
semi−perimeter = a+b+c/2
s= (5+12+13)/2
s= 30/2
s=15cm
Area of the triangle (according to the Heron's Formula)
= s(s−a)(s−b)(s−c)
= 15(15−5)(15−12)(15−13)
= 15(10)(3)(2)
= 900
=30cm ^2 .
Explanation:
Hope it is helpful....