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Delvig [45]
2 years ago
8

Cylinders A and B are similar solids. The base of cylinder A has a circumference of 4π units. The base of cylinder B has an area

of 9π units.
The dimensions of cylinder A are multiplied by what factor to produce the corresponding dimensions of cylinder B?
Mathematics
2 answers:
victus00 [196]2 years ago
7 0

Answer:

The factor is \frac{3}{2}.

Step-by-step explanation:

Given : Cylinders A and B are similar solids.

The base of cylinder A has a circumference of  4\pi units.

The base of cylinder B has an area of  9\pi units.

To find :  The dimensions of cylinder A are multiplied by what factor to produce the corresponding dimensions of cylinder B?

Solution :

Let x be the factor.

So, according to question,

\text{Dimension of cylinder A}\times x = \text{Dimension of cylinder B}   ........[1]

The dimension refer here are radius of both cylinders.

In cylinder A,

Circumference of base is 4\pi units.

Circumference of base of cylinder is C=2\pi r

4\pi=2\pi r

r=2

The dimension of cylinder A is r=2

In cylinder B,

Area of cylinder is 9\pi units.

Area of base of cylinder is A=\pi r^2

9 \pi=\pi r^2

r^2=9

r=3

The dimension of cylinder B is r=3

Substitute in [1]

2x=3

x=\frac{3}{2}

Therefore, The factor is \frac{3}{2}.

Ronch [10]2 years ago
5 0
The base of cylinder b has an are of 9 unites
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k0ka [10]

Answer:

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Step-by-step explanation:

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<h3>Area of each triangle:</h3>

From the figure, we know that <em>b = 20ft </em>and <em>h = 25ft. </em>So, the area would be:

A_{t}=\frac{b.h}{2}=\frac{(20ft)(25ft)}{2}=250ft^{2}

<h3>Area of each circular section:</h3>

From the figure, we know that \alpha =2.21 radians and the radius is R=30ft. So, the are would be calculated with this formula:

A_{cs}=\frac{\pi R^{2}\alpha}{360\°}

Replacing all values:

A_{cs}=\frac{(3.14)(30ft)^{2}(2.21radians)}{6.28radians}

Remember that 360\°=6.28radians

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A_{total}=2A_{t}+2A{cs}=2(250ft^{2} )+2(994.5ft^{2})\\A_{total}=500ft^{2} + 1989ft^{2}=2489ft^{2}

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The factor (1 -0.2) represents the fraction remaining at the end of a week. That number raised to the power w will represent the fraction remaining at the end of w weeks. This fraction can reasonably be referred to as "the decay factor after w weeks."

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Lelu [443]
Hey. Let me help you on this one.

In this problem, we have a constant rate of baker decorating cupcakes, and it gives us both values - cupcakes, and minutes.

In order for us to solve this question, we will need to simplify this ratio in order to make denominator, which is going to be 303030 minutes, equal to one. This can be done by property of division.

I will also be attaching an image that might help you with your studies. I recommend looking over it if you have trouble simplifying ratios. 

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Answer:

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2 years ago
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