In the figure PA=3cm,AB = 9cm PC=4cm then find CD? please explain in step by step.
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Step-by-step explanation:
====>> Thunder is the sound caused by lightning. ... The sudden increase in pressure and temperature from lightning produces rapid expansion of the air within and surrounding the path of a lightning strike. In turn, this expansion of air creates a sonic shock wave, often referred to as a "thunderclap" or "peal of thunder
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