Plzz ans this question with steps from pythagoras theoram

Dear Student, 

In ABCusing pythagoras theoremAC2=AB2+BC2AC2=42+22AC2=16+4AC2=20 cm Now in ABDAD2=AB2+BD2    as given AC=BDAD2=AB2+AC2       =42+20       =16+20        =36AD=36AD=6 cm 

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2^2+4^2=16=4=20

AC = root 20 =4.472

AD^2=4.472^2+4^2=20+16=36
AD = root 36 = 6.


hope this helps!

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