Question

In a triangle , sides of triangle are 3 cm, 4 cm, & 5 cm then what is the semi perimeter of triangle​

Answer 1

Answer :-

• The semi perimeter of the triangle is 6 cm.

Given :-

• In a triangle, the sides are 3 cm, 4 cm and 5 cm.

To find :-

• The semi-perimeter of the triangle.

Step-by-step explanation :-

• In this question, the measures of the sides of a triangle have been given to us. We have to find it's semi perimeter. Let's use s formula for solving this question!

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We know that :-

$\underline{\boxed{ \sf Semi \: perimeter = \dfrac{a + b + c}{2}}}$

Where,

• a = First side.
• b = Second side.
• c = Third side.

Here,

• a = 3 cm.
• b = 4 cm.
• c = 5 cm.

Substituting the given values,

$\rm Semi \: perimeter = \dfrac{3 + 4 + 5}{2}$

$\rm Semi \: perimeter = \dfrac{12}{2}$

$\overline{ \boxed{\rm Semi \: perimeter = 6 \: cm}}$

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• Hence, the semi perimeter is 6 cm.

Answer 2

Given :

• First side (a) = 3cm
• Second side (b) = 4cm
• Third side (c) = 5cm

To Find :

• Semi perimeter

Solution :

✰ As we know that, Semi perimeter of a triangle is given by s = a + b + c / 2. So Simply we will put the given values in the formula to find the semi perimeter of the Triangle.

⠀⠀⠀⠀

⠀⠀⟼⠀⠀semi perimeter = a + b + c / 2

⠀⠀⟼⠀⠀semi perimeter = 3 + 4 + 5 / 2

⠀⠀⟼⠀⠀semi perimeter = 3 + 9 / 2

⠀⠀⟼⠀⠀semi perimeter = 12 / 2

⠀⠀⟼⠀⠀semi perimeter = 6cm

Thus Semi perimeter of the Triangle is 6cm

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