tolong bantu ya... jawabnya jangan asal :)

Semoga membantu :-)
Panjang diameter = 2 × jari jari
Jari jari = OD + BD
[tex] bd = \sqrt{ {bc}^{2} - {cd}^{2} } \\ = \sqrt{ {15}^{2} - {12}^{2} } \\ = \sqrt{225 - 144} \\ = \sqrt{81} \\ = 9 \: cm[/tex]
Jari jari = OD + BD = 24 + 9 = 33 cm
Diameter = 2 × jari jari = 2 × 33 = 66 cm

Cari panjang BD dulu.
1.
[tex] \sqrt[2]{{15}^{2} - {12}^{2} } = \sqrt{81} = 9[/tex]
BD + DO = jari jari = 33 cm.
Diameter = 2 x 33 = 66 cm