By Team Aakash Byju's | 17th December 2022
a + b + c
a + b + c
2
a + b + c
4
a + b + c
5
Detailed Explanation
a + b + c
2
Perimeter of a triangle is the sum of all its sides. Similarly, a semi-perimeter is half the perimeter of the triangle.
So, if in a ΔABC with sides a, b and c, the perimeter is given as, P = a + b + c. Thus the semi-perimeter is given as:
s =
1
2
(a + b+ c)
or
s =
a + b+ c
2