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Sudut S = Sudut R
Sudut P = Sudut Q
a. Sudut P = (360 - 90) / 2 = 135 derajat
b. 360 derajat
c. 12 + (3 + 12 + 2) = 12 + 17 = 29 cm
mohon koreksi jika ada yang salah
Jika cukup membantu ... boleh dong minta bintangnya ?