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3,14*15*15
706,5
luas lingkaran = phi r2
= 3,14 x 15 x 15
= 706,5 cm2
tinggi kerucut =
V kerucut = 1/3 x phi x r2 x t
4710 = 1/3 x 3,14 x 15 x 15 x t
4710 = 3,14 x 5 x 15 x t
4710 = 235,5 x t
t = 4710 : 235,5
t = 20 cm
Panjang garis pelukis
S2 = R2+T2
S2 = 15^2 + 20^2
S2 = 225 + 400
S2 = 625
S = akar dari 625
S = 25 cm
Saya jamin 100 persen bener , kalau salah saya protes ke hakim :3
kasih jawaban paling cerdas ya jika sudah cukup ngerti :) terima kasih :)