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3 years ago

Which equation can be used to find the surface area of the cylinder?

Mathematics

1 answer:

Verdich [7]3 years ago

4 0

Answer:

S = π( 2(9) + 2(3)(14))

Step-by-step explanation:

Here we are to select which of the options best describe the equation that could be used to find the surface area of the cylinder.

Mathematically,

the surface area of a cylinder can be calculated using the formula

S = 2 π r^2 + 2 π rh

from the question, we have r as d/2 = 6/2 = 3cm and h = 14cm

We plug these two values into the equation above

Thus, we have

S = 2 * π * 3^2 + 2 * π * 3 * 14

S = π( 2(9) + 2(3)(14))

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The first three terms of a sequence are given. Round to the nearest thousandth (if necessary).

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Answer: 272

Step-by-step explanation:

Let a1=11

a2=20

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Formula for sequence=

an=a1+(n-1)d

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n= nth position

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We are looking for the 30th term,so our n=30

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an= a1+(n-1)d

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3 years ago

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A zookeeper is monitoring the population of birds. The flock needs to have exactly three times more females than males to thrive

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The correct option is D. $0< x\leq 20$ and $0< y\leq 60$ .

Given, $x$ represent the number of male birds and $y$ represent the number of female birds.

The flock needs to have exactly three times more females than males to thrive.

So, in equation form we have,

$y=3x$ ........(1)

Since, The zoo only has room for a maximum of 20 male birds.

So, we can write the inequality for $x$ as,

$0< x\leq 20$ ......(2)

Since The maximum number of male birds is 20, so for $x=20$

y will be,

$y=3\times 20\\$

$y=60$

Hence, The maximum number of female birds is 60.

So, we can write the inequality for $y$ as,

$0< y\leq 60$

Hence the required constraints are $0< x\leq 20$ and $0< y\leq 60$ .

For more details on Inequality follow the link:

brainly.com/question/19491153

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