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4 years ago

9

What's the circumference of a circle that is 9cm? Please explain step by step of how you got the answer...

1 answer:

Sauron [17]4 years ago

4 0

Formula for finding circumference of a circle is 2πr.

Step-by-step explanation:

The given question says what is the circumference of a circle that is 9cm.
As radius is required for finding circumference of a circle, the formula is 2πr.
Therefore taking the formula and substituting radius (r)= 9 cm. We get 2πr as 2×π×9 = 18π cm OR

If we substitute the value of π as 3.14 we will get⇒ 2×3.14×9= 56.52 cm.
So the circumference of the given circle would be 18π or 56.52 cms.

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Question 13 options:<br><br><br> What is the slope of the line of the graph?

Elena-2011 [213]

Answer:

Step-by-step explanation:

To find the slope, pick any two points fromthe line.

(2,2) & (0,-4)

x₁ = 2 & y₁ = 2

x₂ = 0 & y₂ = - 4

$\boxed{Slope=\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}}$

$\sf =\dfrac{-4-2}{0-2}\\\\\\ =\dfrac{-6}{-2}\\\\\\=3$

Slope = 3

At y-intercept x = 0.

From the graph, y-intercept = -4

Equation of the line: y = mx + b

y = 3x - 4

3 0

2 years ago

3-6+5=what is the value

Dmitry [639]

2 is the value of 3-6+5.

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4 years ago

Does anyone have a idea ?

FromTheMoon [43]

Might be c not sure!!

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3 years ago

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DiKsa [7]

ANSWER:

As we know that,

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3 0

3 years ago

Read 2 more answers

A rectangular field is 4 times as long as it is wide. If the length is decreased by 10 in. and the width is increased by 2in. th

Keith_Richards [23]

I think the original width was 9.6 in and the original length was 38.4 in.
Hope this will help u

5 0

3 years ago