In the given figure chords AB and CD intersect at P. If PA = x, PB =9cm, PC =5 cm and PD = 8.1cm, find the value of ‘x’.

5.5 cm

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4.5 cm

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4 cm

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1 cm

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Solution

The correct option is B
4.5 cm

PA and PB intersect at P (given)
$P A \times P B = P C \times P D$
$x (9) = 5 (8.1)$
$x = 4.5 c m$

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