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lianna [129]
3 years ago
5

the distance from the center of a compact disc to the edge of the disc is 6 centimeters what is the area of the compact desk

Mathematics
2 answers:
Gelneren [198K]3 years ago
8 0
The formula for the area of a circle is A=\pi r x^{2}

The radius if half your diameter,
 
In this case your diameter is 12 so your radius is 6

Then you plug it in the equation, so it is A= \pi  6^{2} or A=36 \pi

This leaves you with the area at about 113.04 centimeters ^{2}
Mumz [18]3 years ago
5 0
Area is calculated using the value of pi times the square of the
radius. Therefore, the area of a standard compact disc is 113.0976
square centimeters.
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Emilio bought an ant farm that had 15 ants in it already. He read somewhere that
Nina [5.8K]

The number of ants in his farm after 12 weeks is 218.

Step-by-step explanation:

Step 1:

It is given that there are 15 ants initially and the ant population increases by 25% each week.

This is an exponential rate of increase that can be modeled by the following equation:

Number of ants after n weeks = Initial number of ants * (1 + rate of increase) ^{n}

Step 2:

Rate of increase = 25% = 25 / 100 = 0.25

Number of weeks = 12

Number of ants  after 12 weeks = 15* (1 + 0.25 )^{12} = 218.27 (rounded off to 218)

Step 3:

Answer:

The number of ants in his farm after 12 weeks is 218.

6 0
2 years ago
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2 years ago
What's the length of side b in the figure below? I posted a picture so you can view the actual problem. Please help.
svetoff [14.1K]

we know that

in the right triangle of the figure

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6 0
3 years ago
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Nutka1998 [239]
<span>1.       </span><span>Given equation = 2 thousands 7 tens / 10.
From this given equation, give the unit form and the standard form
Unit form is the expression where you replace the number with its place values.
=> 2 thousands and 7 tens divided by 1 tens.
=> 2 hundreds 7 ones – answer in unit form
Standard form is the expression which uses numbers and operators to express an equation.
=> 2 070 / 10
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6 0
3 years ago
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Answer:

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Step-by-steit would be 9 by 6p explanation:

it would be 9 by 6

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