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ae/18 = 32/24
ae/18 = 4/3
ae = 18×4/3
ae=24 cm
ed/ts = ab/pq
ed/21 = 32/24
ed =21×4/3
ed = 28 cm
qr/bc=pq/ab
qr/48=24/32
qr =48×3/4
qr =36