Question

find using heron formula ​answer in notebook

Answer 1

Answer:

Step-by-steSide of traffic signal board = a

Perimeter of traffic signal board = 3 × a

By Heron’s formula,

Perimeter of traffic signal board = 180 cm

Side of traffic signal board  

Using equation (1), area of traffic signal board  

p explanation:

Answer 2

Step-by-step explanation:

find using heron formula answer in notebook