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[" EXERCISE "7C],[" 1.AABC - ADEF and th...

[" EXERCISE "7C],[" 1.AABC - ADEF and their areas are respectively "64" cm'and "121cm^(2)" .If "],[" EF "=15.4cm" ,find "BC" ."],[" 2.The areas of two similar triangles "ABC" and "PQR" are in the ratio "9" : "16." If "],[" 2.The areas of two similartriangles "ABC" and "PQR" are in the ratio "9" .If .If "],[BC=4.5cm," find the length of "QR" ."]

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