Question

9. (a) Find the semi-perimeter of a triangle whose sides are 12cm, 14cm, 16cm?
​

Answer 1

$\bigstar$ Question :

$\implies$ Find the semi-perimeter of a triangle whose sides are 12cm, 14cm, 16cm?

________________________________________

$\bigstar$ To Find :

$\implies$ Semi perimeter of a triangle = ?

________________________________________

$\bigstar$ Given :

$\implies$ Sides = 12 cm, 14 cm, 16 cm

________________________________________

$\bigstar$ Required Formula :

$\implies$ Semi perimeter of a triangle = $\mathtt{\frac{a + b + c}{2}}$

________________________________________

$\bigstar$ Solution :

Let, a = 12 ,b = 14, c= 16 and semi perimeter of a triangle be x .

$\mapsto$ x = $\mathtt{\frac{12+14+16}{2}}$

$\mapsto$ x = $\mathtt{\frac{42}{2}}$

$\mapsto$ x = 12

Therefore, The semi perimeter of a triangle = x = 12 cm.

________________________________________

Answer 2

the answer is 42cm is the answer