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WINSTONCH [101]
3 years ago
13

NASA is painting the nose cone of a sounding rocket with a special sealant which reduces the air-drag on the rocket. If they nee

d to do two coats of the sealant, how many square feet are they painting? Use π = 3.14.
Mathematics
1 answer:
crimeas [40]3 years ago
4 0

Answer:

The formula for the lateral surface area (LSA) of a right cone is:

LSA = π x r x l

where: r as radius, and l as the slant height of the cone

If NASA need to do two coats of the sealant, the number of square feet that they are painting is: 2 x LSA = 2 x π x r x l

Step-by-step explanation:

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Answer:

y=17

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3 years ago
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Two welders worked a total of 46 h on a project. One welder made $34/h, while the other made $39/h. If the gross earnings of the
Ratling [72]

Answer:

25 and 21 hours respectively

Step-by-step explanation:

Let the number of hours worked by each welder be x and y respectively.

They worked a total of 46 hours. This means :

x + y = 46 hours.......(I)

Now, given their hourly charges, since we have the total amount of money realized, we can make an equation out of it. This means:

34x + 39y = 1669........(ii)

We then solve both simultaneously. From I, x = 46 -y

We can substitute this into ii

34(46 -y) + 39y = 1669

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5y = 105

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2 years ago
What are the steps on how to copy an angle? (Geometry)
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Step-by-step explanation:

Make a point P that will be the vertex of the new angle.

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2 years ago
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Answer:

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Step-by-step explanation:

Given that:

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The inequality 2.50x>40.00 represents the number of lunches needed to be purchased for the monthly lunch pass to be a better deal.

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3 years ago
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