Question

4. The given figure shows a quadrilateral ABCD
in which AD 13 cm, DC = 12 cm, BC = 3
cm and ZABD = ZBCD = 90°. Calculate the
length of AB.
A​

Answer 1

Use Pythagoras theorem in ∆bcd ,u will get the value of bd

then use Pythagoras theorem in ∆abd

and u will get the value