A monument that is 189 feet tall is built on a site that is 73.4 feet below sea level. How many feet above sea level is the top of the monument?

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)

same question do you know the answer