Question

Question 16.
sides of a triangle are 5cm ,8cm,13cm ,than the semi perimeter of a triangle is s= ​

Answer 1

Step-by-step explanation:

We Have :-

$triangle \: with \: sides \\ \\ \\ 5 \: cm \\ \\ \\ 8 \: cm \\ \\ \\ 13 \: cm$

To Find :-

$semi \: perimeter$

Formula Used :-

$semi \: perimeter \: = \dfrac{side + side + side}{2}$

Solution :-

$semi \: perimeter \: = \dfrac{side + side + side}{2} \\ \\ \\ semi \: perimeter \: = \dfrac{5 + 8 + 13}{2} \\ \\ \\ \\ semi \: perimeter \: = \dfrac{26}{2} \\ \\ \\ semi \: perimeter \: = 13 \: cm$

Answer 2

☯ GiveN :

Sides of a triangle are 5 cm, 8 cm and 13 cm respectively.

$\rule{200}{1}$

☯ To FinD :

We have to find the semi - Perimeter of the triangle.

$\rule{200}{1}$

☯ SolutioN :

We know the formula to calculate the perimeter of triangle

$\Large{\implies{\boxed{\boxed{\sf{ Perimeter = Side + Side + Side}}}}}$

★ Putting Values ★

$\sf{\dashrightarrow Perimeter = 5 + 8 + 13} \\ \\ \sf{\dashrightarrow Perimeter = 13 + 13} \\ \\ \sf{\dashrightarrow Perimeter = 26} \\ \\ \Large{\implies{\boxed{\boxed{\sf{Perimeter = 26 \: cm}}}}}$

$\rule{150}{2}$

Now,

$\small{\implies{\boxed{\boxed{\sf{Semi - Perimeter = \dfrac{Perimeter}{2}}}}}}$

$\small{\sf{\dashrightarrow Semi - Perimeter = \dfrac{\cancel{26}}{\cancel{2}}}} \\ \\ \small{\sf{\dashrightarrow Semi - Perimeter = 13}} \\ \\ \small{\implies{\boxed{\boxed{\sf{Semi - Perimeter = 13 \: cm}}}}}$