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QS =
SQ =
QS =
QS = √63
QS = 3√7 cm
RS² = PR² - PS²
RS =
RS =
RS =
RS = √19 cm
K = Jumlah seluruh sisi
K = 10 + 12 + 3√7 + √19 cm
K = 22 + 3√7 + √19 cm
L PQR = L PQS + L PRS
L PQR = ( × a × t) + ( × a × t)
L PQR = ( × 3√7 × 9) + ( × √19 × 9)
L PQR = 13,5√7 + 4,5√19 cm²