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Thank you We sneak in and here's your smoke du

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jour brought to you by water tanks Ifyou're not dunking

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your teacher in one Well what good are they anyway

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Alright a large cylindrical water tank has a radius of

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two meters and a surface area of twenty eight high

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meters So how tall is the water tank and here's

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A potential answers Okay here we go Alright So suppose

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we can't just ask it or look up its information

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on it's like dating profile All right well we're gonna

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have to use some kind of formula here And we're

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told that the tank is a radius of two meters

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and a service area Twenty eight pi square meters All

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right well where do we go A formula for the

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surface area of a cylinder is s a equals two

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pi r squared plus two pi r h where s

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a is surface area Are is the radius of a

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cylinder And h is the height Got to be sure

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you got those right All right well the first bit

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this helps us find the area of the top and

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bottom circles while this second part helps us find the

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area of the rest of the cylinder Okay So now

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let's plug in what we know in this formula twenty

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eight pi that service area equals two pi times two

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squared And since two is the radius plus two pi

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times two times a jj equals eight pi plus four

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pi times Cage mouthful Yeah It's a lot We can

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simplify by combining Like terms and subtracting a high from

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both sides to get twenty pi equals four pi h

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Now divide both sides by pie will get rid of

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that pie and we have a cheek ual's and that's

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It that's our hype Answer b Well that one was 00:01:50.566 --> [endTime] a slam dunk

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