WEBVTT
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Work out the volume of the cylinder, giving your answer accurate to two decimal places.
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The volume is going to equal the area of the base times the height.
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The bases of a cylinder are the two circle parts on either end.
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And we can find the area of a circle by multiplying đťś‹ times the radius squared.
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The height of the cylinder is the distance between the two bases.
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Now that weâ€™ve labelled everything, letâ€™s plug in what we know to solve for the volume.
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The radius of our base is five, and the height of our cylinder is seven.
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Five squared equals 25.
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25 times seven equals 175.
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Weâ€™ll plug 175 times đťś‹ into a calculator to try and get the most accurate answer possible.
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And the calculator gives me 549.7787144 continuing.
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We wanna know whatâ€™s accurate to two decimal places; round to the nearest hundredth.
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Because eight is greater than four, weâ€™ll round the seven in the hundredth place to an eight, which gives us a volume of 549.78.
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But 549.78 what?
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Units.
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Since we werenâ€™t given any specific units, weâ€™ll just write the word units.
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But weâ€™re still not quite finished.
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Our unit is missing something.
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Since weâ€™re dealing with volume, we must write units cubed.
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The volume of this cylinder is 549.78 units cubed.