**The circumscribed circle radius is 7 cm. Find the side of the equilateral triangle.**

circumscribed circle radius = 7

side = ( 3 / sqrt(3) ) * 7

side = 12.1244

perimeter = 3 * 12.1244

perimeter = 36.3732

side = 36.3732 / 3

where,

a = side

p = perimeter

A = area

h = height

m = median

t = angle bisector

R = circumscribed circle radius

r = inscribed circle radius

s = semi perimeter