In ABCD paralleogram if AB=12cm, AE=7.5 cm, CF=15cm, Find AD
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Answered by
3
Opposite sides of the parallelogram are congruent.
So DC=12
Solve by Pythagoras Theorem to get DF
DC^2 = CF^2 + DF^2
So DC=12
Solve by Pythagoras Theorem to get DF
DC^2 = CF^2 + DF^2
ommprasad2002:
I've done it but how to calculate a f ?
Answered by
14
Answer:
6 cm
Step-by-step explanation:
AB= 12 cm
therefore CD = 12 cm as AB = CD (opposite sides of a parallelogram are equal)
Area of parallelogram = base * height
= AE*CD
= 7.5*12
= 90cm^2
similarly area of parallelogram = base*height
90 = FC*AD
90 = 15*AD
AD=90/15
AD = 6 cm
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