In the diagram, PQ and RS are chords of a circle centre O which meet at T outside the circle. If TP = 24cm. TQ = 8cm and TS = 12cm, find TR.
-
A.
16cm -
B.
14cm -
C.
12cm -
D.
8cm
Correct Answer: Option A
Explanation
PT x QT = TR x TS
24 x 8 = TR x 12
TR = (frac{24 times 8}{12})
= = 16cm