how to solve this.... 360=20√4a^2-(80)^2
varun000:
it's wrong
Answers
Answered by
1
Answer:
360 = 20√4a²-80²
=> 360/20 = √4a²-80²
=> 18 = √4a²-80²
=> 18² = 4a²-80²
=> 324+6400 = 4a²
=> 6724 = 4a²
=> 6724/4 = a²
=> 1681 = a²
=> 41² = a²
=> a = ± 41
••••
Answered by
2
hope it helps you dear....
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wait , Let her clarify , which is correct.
you can't divide by 20 directly as there's another quantity which is subtracting
I took 360 = 20[√4a² - 80²]
it is not clearly mentioned in the question.
oky
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