Wha is the area of an equilateral triangle that has a perimeter of 36 centimeters

equilateral means all 3 sides are the same length

36/3 = 12 centimeters per side

 area of triangle = 1/2 * b *h =

1/2 *12 *12 = 72 square cm's

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft