PQ = 15cm
PR = 12cm
QR = 9cm
SR = 9cm
SP ?
SP/9 = 12/15
SP = 108/15
SP = 7,2 cm
Luas = 1/2 (15+9) x 7,2 = 86,4 cm²
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PQ = 15cm
PR = 12cm
QR = 9cm
SR = 9cm
SP ?
SP/9 = 12/15
SP = 108/15
SP = 7,2 cm
Luas = 1/2 (15+9) x 7,2 = 86,4 cm²