18. hasil 103 liter - 6.000 cc + 28.000 cm³= . . . dm³. A. 69
B. 71
C. 125
D. 377

tolong di bantu kakak kakak

answer is x<

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)