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Misha Larkins [42]
3 years ago
14

A solid is composed of a cylinder with a radius of 9" and height of 20" and a hemisphere, as shown. Find the volume of this soli

d.
Mathematics
2 answers:
Dvinal [7]3 years ago
5 0
<span>5089.38 hope this helps

</span>
pav-90 [236]3 years ago
3 0
The formula for finding the volume of a cylinder is V=P*r^2*h. The formula for a sphere is V=4/3*P*r. The volume of the solid is approximately 2714.34, from my calculations.
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alekssr [168]

The painter needs at least two gallons of paint to cover the wall.

To get this answer, you first need to find the area of the wall; by multiplying 20.5 x 16.4. This will get you 336.2.

Then, you need to divide 336.2 by 200. This will get you approx. 1.6.

If it's asking for partial gallons as well, stop here. Your answer is 1.6.

If not, continue.

Unless you're including partial gallons, you can't get 1.6 gallons of paint, so you need to round up. This will be 2 gallons.

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kondor19780726 [428]
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Hope this helps!  :)
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Her solution should be

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