Question

9. Find the unknown length 'x' in the following figure ​

Answer 1

Answer:

x = 7.8 cm

Step-by-step explanation:

P² = PA × PB

=> ( 8 cm )² = 5 cm × ( 5 cm + x )

=> 64 cm² = 25 cm² + 5 cm × x

=> 5 cm × x = 64 cm² - 25 cm²

=> 5 cm × x = 39 cm²

=> x = 39 cm² / 5 cm

=> x = 7.8 cm

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