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Find the volume of a conical pile of sand if $r=3.5 \mathrm{m}$ and $h=1.5 \mathrm{m}$.

$19 \mathrm{m}^{3}$

Calculus 3

Chapter 29

Partial Derivatives and Double Integrals

Section 1

Functions of Two Variables

Partial Derivatives

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find the volume of a cone that has a height of seven meters in a diameter of 15 meters. To find the volume, we can use the volume formula that says the volume of a key cone is equal to 1/3 pie times the radius squared times the hike. We don't yet know what the radius is, but we do know the diameters 15 meters and the diameter is equal to twice the radius. So if 15 equals two r, we know that the radius must be 7.5 meters. Our volume is equal to 1/3 pi times the radius of 7.5 squared times the height of seven. Let's use a calculator to find the volume and round it to the nearest 10th 1/3 times pi times the radius of 7.5 squared times the height of seven and we have a volume that is approximately 412.3 cubic meters

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The number 2 is also the smallest & first prime number (since every other even number is divisible by two).

If you write pi (to the first two decimal places of 3.14) backwards, in big, block letters it actually reads "PIE".

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