Question

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

Answer:

60 and 900 root3

Step-by-step explanation:

3a=180

a=60

area=root3/4 a²

area=root 3/4 *60*60

Answer 2

Answer:

side is equal to 60 (as it is an equilateral triangle)

heron's formula is √s(s-a)(s-b)(s-c) where a,b and c are sides =60 and s is semi perimeter

Step-by-step explanation:

√90 *60*60*60=60*30√6= 18000√6