Mathematics High School

1. The surface area of a cylinder is T=2rtrh+2tr2, where T is the surface area, andr
is the radius of the base. A penny is a cylinder with a diameter of 19.05 millimeters
and a thickness of 1.55 millimeters. Ignoring the raised design, what is the surface
area of a penny?
Pls help

Answers

Answer 1

Answer:

the surface  area of a penny = 662.81 mm²

Step-by-step explanation:

given:

A penny is a cylinder with a diameter of 19.05 millimeters

and a thickness of 1.55 millimeters.

find:

what is the surface  area of a penny?

surface area of a cylinder formula:

As = 2 π r h + 2 π r²

let r = 19.05 / 2

r = 9.53 mm

let h = 1.55mm

plugin values into the formula:

As = 2 π (9.53) 1.55    +    2 π (9.53)²

As = 92.76 +  570.05

As = 662.81 mm²

therefore,

the surface  area of a penny = 662.81 mm²

Answer 2

Answer:

the surface  area of a penny = 662.81 mm²

Step-by-step explanation:

got this correct in exam

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Answer:

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Step-by-step explanation:

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Answers

-17 = 3 + x
-3 -3
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I believe you are solving for x so you’re going to start off by trying to get x by itself. To do that you’re going to subtract 3 from both sides. Since the 17 and the 3 are both negative your answer is also going to be negative (-20) . Then you are left with -20 = x. I hope I was able to help you :)

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Step-by-step explanation:

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3. 0.13

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Step-by-step explanation:

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Answers

Answer:

∠ ABD = 124°

Step-by-step explanation:

A linear pair of angles sum to 180°, thus

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3x + 31 + 2x - 6 = 180, that is

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Answers

Answer:

Step-by-step explanation:

4x-7≤-1

4x≤-1+7

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Answers

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Step-by-step explanation:

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Answers

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Answer:

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Step-by-step explanation:

Each point is moved 4 units up and 5 units right, as required by the problem statement.

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Step-by-step explanation:

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Answers

Answer: k = 84

Step-by-step explanation:

0.12k = 10.08

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Answer:

k=84

Step-by-step explanation:

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Answers

Step-by-step explanation:

Hey there!

Here,

[tex] = - 6 + ( - 4) + 3 [/tex]

While working with them remember some rules;

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Likewise in your question,

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Hope it helps...

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Answers

a geometric figure is any set of points on a plane or in space.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

Answer:

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Step-by-step explanation:

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Answers

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Answers

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Answers

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Answer:

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Step-by-step explanation:

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Answers

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Answer:

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Step-by-step explanation:

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Answers

Answer:

[tex]3m-3[/tex]

Step-by-step explanation:

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[tex]-(2m+3)+5m\\[/tex]

Distribute the negative:

[tex]=-2m-3+5m[/tex]

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And we're done!

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Answers

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Answers

Answer:

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Step-by-step explanation:

Given

[tex]g(x) = \sqrt{x + 3}[/tex]

Required

Determine the domain of g(x)

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This can be expressed using interval notation as follows:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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