Plz answer 7 one

Dear Student,
An equilateral triangle is a triangle which has sides of equal length. 
Perimeter of equilateral triangle=22.5m
Perimeter of equilateral = 3*Side (Since it is the sum of all the sides)
i.e 3*Side = 22.5 
Therefore Side = 7.5m = 750 cm.
Thus the side of the equilateral triangle is of length 750 cm.
Regards.