(adsbygoogle = window.adsbygoogle || []).push({}); Help with a volume question....calculus style

This is a problem solving question, so it is worded. I have cut off the first part which just explains the situation

We have a dam that opens to let water out to flood the plains. When a volume of 300 megalitres has passed through the gates, they automatically close. Within this volume limit, the rate of flow of water (R)

(in megalitres/minute) can be modelled by the following equation:

R = cos 0.001t, where t is the time in minutes.

If the gates open at midnight, at what time (to the nearest minute) will they automatically close?

This is causing me some considerable trouble, as i am only in grade 12. Any help with this would be greatly appreciated, thankyou

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# Help with a volume question calculus style

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