square ABCD is a rectangle length of diagonal Ac is 13cm,itAD→5cm find out the length of Ab
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AD=BC=5
AB=DC=?
in triangle ACE
using Pythagoras theorem
ACsquare=ADsquare+DCsquare
13×13=5×5+DCsquar
169=25×DCsquare
DCsquare=169-25
DC=rootof(144)
DC=12
AB=DC=12cm
AB=DC=?
in triangle ACE
using Pythagoras theorem
ACsquare=ADsquare+DCsquare
13×13=5×5+DCsquar
169=25×DCsquare
DCsquare=169-25
DC=rootof(144)
DC=12
AB=DC=12cm
sana961:
hope it helped
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Hope that's right. .
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