In the figure below, ....OT=13cm, find the length of AB
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In ΔOPT, by pythagoras theorem,
PT²+OP² = OT²
⇒ PT²+25 = 169
⇒PT² = 169-25
⇒PT² = 144
⇒PT = 12 cm
therefore, PT=QT=12cm
PT²+OP² = OT²
⇒ PT²+25 = 169
⇒PT² = 169-25
⇒PT² = 144
⇒PT = 12 cm
therefore, PT=QT=12cm
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