Dengan menggunakan perbandingan kesebangunan
ST/ QO = RT/ PO = SR/ QP
ST/ QO = RT/ PO
6/ 8 = RT/ 15
RT = 15 x (6/8)
RT = 11,25 cm
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Dengan menggunakan perbandingan kesebangunan
ST/ QO = RT/ PO = SR/ QP
ST/ QO = RT/ PO
6/ 8 = RT/ 15
RT = 15 x (6/8)
RT = 11,25 cm
dikalikan silang
RT × QO = PO × ST
RT × 8 = 15 × 6
RT = 90 / 8
RT = 11,25
isiannya c. 11,25
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