Find the semi perimeter of a triangle whose sides are 8cm,11cm and 21cm
Answers
Answered by
2
Step-by-step explanation:
perimeter of traingle= a+b+c
therefore,, semi perimeter= a+b+c/2
here,, a= 8 cm, b=11cm, c=21cm
so,, semi perimeter= 8+11+21/2
= 40/2
=20
hope this helps;)
Similar questions