Question

Find a semi perimeter of a triangle whose sides are 15cm , 12cm and 34cm

Answer 1

Answer:

30.5

Step-by-step explanation:

Semi perimeter of ∆ = (a+b+c)÷2

So, (15+12+34)÷2

= 61÷2

= 30.5

Answer 2

sides of triangle are 15cm, 12cm and 34cm

$\therefore \: semi \: perimeter = \frac{15 + 12 + 34}{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{61}{2} = 30.5cm$