Question

the sides of an triangle are 7cm,24cm and 25cm,the semi perimeter is​

Answer 1

Answer:

S=a+b+c/2

S=7+24+25/2

S=43.5cm

Step-by-step explanation:

I hope it will help

Answer 2

Given :-

The sides of an triangle are 7 cm, 24 cm and 25 cm.

To Find :-

The semi perimeter of the triangle.

Analysis :-

Firstly, we've to find the perimeter of the triangle by substituting the values given in the formula of perimeter of triangle.

In order to get the semi perimeter, divide the perimeter we got by two.

Solution :-

By the formula,

$\underline{\boxed{\sf Perimeter \ of \ triangle=a+b+c}}$

Given that,

a = 7 cm

b = 24 cm

c = 25 cm

Substituting their values,

Perimeter = 7 + 24 + 25

Perimeter = 56 cm

Therefore, the perimeter is 56 cm.

Finding semi perimeter,

$\underline{\boxed{\sf Semi \ perimeter=\dfrac{Perimeter}{2} }}$

Given that,

Perimeter = 56 cm

Substituting them,

Semi perimeter = 56/2 = 28 cm

Therefore, the semi perimeter is 28 cm.