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maka DO=AC=4
BO=DC=24
AB=akar bo^+oa^
24^+7^=576+49=akar 625=25
gari siggung luar
jawabnnya C
Jawaban soal nomer 2
sudut = 180 - 35 - 90
= 55°
busur = 55/360 x 2 x π x r
= 55/180 x 22/7 x 21
= 55/90 x 11 x 3
= 55/30 x 11
= 12,16 cm