Question

Find the semi perimeter of a triangle with sides 9 cm, 12 cm and 30 cm.​

Answer 1

$\huge\pink{\boxed{\green{\mathcal{\overbrace{\underbrace{\fcolorbox{red}{lightgreen}{\underline{\pink{✾Answer✾}}}}}}}}}$

semiperimeter is =9+12+30 cm/2=51/2 cm=25.5 cm

Answer 2

Answer:

1st Side = 9 cm

2nd Side = 12 cm

3rd Side = 30 cm

semi-perimeter = perimeter / 2

=> semi-perimeter = (9 + 12 + 30) / 2

=> semi-perimeter = 51 / 2

=> semi-perimeter = 25.5 cm