If the area of an equilateral triangle is 25√3 cm2, then its perimeter = ____ cm.
A traffic signal board, indicating 'SCHOOLAHEAD', is an equilateral triangle with side a. Find the area of the signal board, using Heron's formula. If its perimeter is 180cm, what will be the area of the signal board?
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 180cm, what will be the area of the signal board?