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=1/2 × pi × d
=1/2 × 22/7 × 28
=44 cm^2
keliling segitiga sama kaki =
= s + s + s
= 28 + 35 + 35
= 98 cm^2
keliling gabungan =
44 cm^2 + 98cm^2 = 142 cm^2
keterangan = cm^2 adalah cm persegi (maaf karena di keyboard nggak ada tanda pangkat hehehe :>)
semoga membantu ya dek :)))
diameter = 28 cm
dit= keliling gabungan.....???
jawab= K= K.segitiga (nggk pakai alas)+ K.1/2 lingkaran
= (a+b) + (1/2 /pi d)
= (35+28) + (1/2 × 22/7 × 28)
= 63 + 44
= 107 cm²