Question

find the semiperimeter of a triangle whose sides are 26cm.28cm.30cm

Answer 1

Answer:

42 cm.

Step-by-step explanation:

Perimeter of a Triangle:-

A+B+C (Sum of all sides)

Semiperimeter= 1/2*Perimeter

P= 28+26+30=84

S(Semiperimeter)=Perimeter/2

=84/2. =42cm.

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Answer 2

The semi perimeter of a triangle whose sides are 26 cm , 28 cm , 30 cm is 42 cm

Given :

The sides of a triangle are 26 cm , 28 cm , 30 cm

To find :

The semi perimeter of the triangle

Solution :

Step 1 of 3 :

Write down the sides of the triangle

Here it is given that sides of a triangle are 26 cm , 28 cm , 30 cm

Step 2 of 3 :

Find the perimeter of the triangle

The perimeter of the triangle

= Sum of three sides of the triangle

= 26 cm + 28 cm + 30 cm

= 84 cm

Step 3 of 3 :

Find semi perimeter of the triangle

The semi perimeter of the triangle

$\displaystyle \sf{ = \frac{84}{2} \: \: cm }$

$\displaystyle \sf{ = 42 \: \: cm }$

The semi perimeter of a triangle whose sides are 26 cm , 28 cm , 30 cm is 42 cm