Physics, asked by djlcjgzn, 11 months ago

please see this attachment

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Answered by AdithyaMahesh17

1

Answer:

680 m

Explanation:

Distance = Speed × Time

Distance will be 2d as it is an echo.

2d = 340 × 4

2d = 1360

d = 1360/2

d = 680 metres

Hence the cliff is 680 m away from the child

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