Question

If s is the semi-perimeter of a $\Delta ABC$ whose sides are a,b,c then s=.............?

• A. $a+b+c$
• B. $\frac{a+b+c}{2}$
• C. $\frac{a+b+c}{3}$
• D. $\frac{a+b+c}{4}$

Answer 1

Answer: (B)

$\frac{a+b+c}{2}$

semiperimeter of a triangle is given as half of the perimeter which means half of the sum of the lengths of all three sides

Hence, in given question $△ABC$

semiperimeter $=s=\frac{a+b+c}{2}$