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 it's perimeter is 180 cm, what will be the area of the signal board
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Answer:
900√3 sq. cm
Step-by-step explanation:
perimeter = 180cm
length of one side = a = 180/3 = 60cm
then, s = (60+60+60)/2 = 90cm
area = √s(s-a)^3
= √ 90*(30)^3
= √2430000
= 900√3 sq. cm
please folow me
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