Question

A traffic signal board, indicating 'SCHOOL AHEAD', is an equilateral triangle with
side 'a'. Find the area of the signal board, using Heron's formula. If its perimeter is
180 cm, what will be the area of the signal board?​

Answer 1

Step-by-step explanation:

perimeter of signal board- 180cm

= side= 180/3=60cm

=half perimeter=180/2

= 90 cm

area by herons formula=√90(90-60)(90-60)(90-60)

= 2430000cm²