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1 segitiga mempuyai sudut -> 360/6 = 60 derajat
luas sgtg = 1/2 . r . r sin x
= 1/2 .10.10 . sin 60
= 50 . 1/2
= 25
luas segi enam = 6 x luas segitiga
= 6 x 25
= 150