Question

In the given figure AB CD​

Answer 1

Answer:

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Given: AB∥CD

Construction: Draw a perpendicular on CD from B, meting CD at E

Thus, BE = AD

Now, In △ABD,

BD2=AD2+AB2

252=AD2+72

AD=24 cm

thus, BE=AD=24 cm

and CE=CD−AB=17−7=10 cm

Now, In △BCE

BC2=BE2+CE2

BC2=242+102

BC2=676

BC=26 cm