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sudut RNQ : 90 derajat
B. MN = SR = 26 cm
C. PM + QN = PQ - SR
PM + QN = 48 - 26 = 22 cm
PM = QN = 11 cm
t = 11 cm (karena sisi yang menghadap sudut yang sama besar sama panjangnya)
D. (26 + 48) x 11 / 2
= 74 x 11 / 2
= 37 x 11
= 407 cm²