Question

The semi perimeter of a triangle is 21cm.if two sides of a triangle are 14cm ;13cm then the length of third side?

Answer 1

Answer:

total perimeter is 42

Step-by-step explanation:

g

iven two sides length is 14 and 13

their total 27

remaining side is 42-27

15

Answer 2

semi perimeter=(sum of sides)/2

21cm=(14cm+13cm+third side)/2

14cm+13cm+third side=(21×2)cm

27cm+third side=42cm

third side=(42-27)cm

third side=15cm

hope it helps

:-)