3 years ago

Answer pls , I’ll make you brainliest

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

4 0

I think it it because yes why not it's okay I think

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Katena32 [7]

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4. About 2,700 in2

Step-by-step explanation:

The area of a circle ( $A$ ), measured in square inches, is directly proportional to the square of its diameter ( $d$ ), measured in inches. That is:

$A \propto d^{2}$

$A = k\cdot d^{2}$

Where $k$ is the constant of proportionality, dimensionless.

In consequence, the following relationship between circles A and B is obtained:

$\frac{A_{B}}{A_{A}} = \frac{d_{B}^{2}}{d_{A}^{2}}$

The area of the circle B is now cleared:

$A_{B} =\left(\frac{d_{B}}{d_{A}} \right)^{2}\cdot A_{A}$

Given that $d_{A} = 20\,in$ , $d_{B} = 60\,in$ and $A_{A} = 300\,in^{2}$ , then:

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3 years ago

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Answer:

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Step-by-step explanation:

a) The sum of the angles along the line is 180°. That means ...

2x° +90° +x° = 180°

b) Subtracting 90° and dividing by 3° gives ...

3x° = 90°

x = 30

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2 years ago