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Evaluate integral √a²-x²
![](https://sg-imath-prod.s3.ap-southeast-1.amazonaws.com/sg/1583661817480_NIOL9Ab3.jpeg)
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Evaluate integral √a²-x²
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Mrs Wong had some soy sauce. She used the same amount of soy sauce each day. At the end of the 5th day, she was lef with 2/5 of how much she had at first. At the end of the 8th day, she was left with 8 ml of soy sauce. How much soy sauce did she have at first?
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