What is the approximate area of a circle shown below

Mathematics

2 answers:

lana66690 [7]4 years ago

7 0

Answer:

The answer to your question is 13.2

Step-by-step explanation:

To figure out the answer to this equation you have to multiply by pi or 3.14

Finger [1]4 years ago

7 0

Answer:

C. 55.4

Step-by-step explanation:

Formula: A = π • r²

A= 3.14 • 4.2²

4.2 • 4.2

17.64 • 3.14

A=55.3896

A=55.4

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Give a real-world example of how integers are used. Explain what 0, negative integers, and positive integers mean in the situati

Vilka [71]

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3 years ago

What is the constant of proportionality for 6,47.94?

Maurinko [17]

$\boxed{k=7.99}$

<h2>Explanation:</h2>

In this exercise, we have the following point:

$(6,47.94)$

Let's assume that y varies directly as x, so this implies we can writ y as the product of x and some non-zero real constant k. In a mathematical language:

$y=kx$

As you can see, this is the equation of a line whose slope is k and passes through the origin. Therefore, the slope of the line is the constant of proportionality we are looking for:

$Solving \ the \ equation \ for \ k: \\ \\ k\frac{y}{x} \\ \\ Where: \\ \\ x=6 \\ y=47.94 \\ \\ k=\frac{47.94}{6} \\ \\ \therefore \boxed{k=7.99}$