Question

The semi perimeter of a triangle whose sides are 12cm,16cm,20cm is

Answer 1

Question :---- we have to find semipermeter of ∆ ,

Given:--- sides are 12cm , 16cm and 20cm....

we know that,

$semiperemeter = \frac{perimeter}{2}$

and perimeter of any ∆ = sum of its 3 sides ...

so,

semiperemeter = (12+16+20)/2 = 48/2 = 24cm (Ans)