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Anettt [7]
3 years ago
8

The truck’s tank is a stainless steel cylinder. Find the surface area of the tank. Round your answer to the nearest hundredth.

Mathematics
1 answer:
OleMash [197]3 years ago
3 0
A=pi r^2
A= pi(4^2)
A=pi(16)
A=50.265...ft^2
2A=100.5309...ft^2

C=pi d
C=8pi
C=25.1327...ft^2

25.1327...(50)= 1256.637...

1256.637...+100.5309...=1357.167... so the surface area of the tan is about 1357.2 ft^2
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4 0
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PLEASE HELP
marta [7]
Let's begin by putting together some equations:

Seth has charges $39 and then $13 per hour. Since "hour" is our variable, let's write that as $13h where h = the number of hours.

Seth = 39 + 13h, $39 plus $13 times the number of hours

Malcolm charges $55 and then $11 per hour. So:

Malcolm = 55 + 11h, $55 plus $11 times the number of hours

Our goal is to find out how many hours both have to work before they charge the same amount. So let's set our Seth and Malcolm equations equal to one another.

39 + 13h = 55 + 11h, because we want to solve for h to see the number of hours.

First let's subtract 39 from each side:

(39 + 13h) - 39 = (55 + 11h) - 39
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Now let's subtract 11h from each side:

(13h) - 11h = (16 + 11h) - 11h
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Simplify and solve for h by dividing each side by two:

(2h)/2 = (16)/2
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false

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