3 years ago

If the radius and diameter is 2 decimeter then its diameter is in centimetre

Mathematics

1 answer:

Soloha48 [4]3 years ago

8 0

Answer:

Sorry but I dont thin that the radius AND the diameter can be 2 since the radius is half the diameter

Step-by-step explanation:

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The general form of the equation of a circle is x2 + y2 + 42x + 38y − 47 = 0. The equation of this circle in standard form is .

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Answer:

(-21,-19)

$\sqrt{849}$

Standard form

Step-by-step explanation:

We are given the equation of circle

$x^2+y^2+42x+38y-47=0$

General equation of circle:

$x^2+y^2+2gx+2fy+c=0$

Centre: (-g,-f)

Radius: $\sqrt{g^2+f^2-c}$

Compare the equation to find f, g and c from the equation

$g\rightarrow 21$

$f\rightarrow 19$

$c\rightarrow -47$

Centre: (-21,-19)

Radius (r) $=\sqrt{21^2+19^2+47}=\sqrt{849}$

Standard form of circle:

$(x+21)^2+(y+19)^2=849$

The centre of circle at the point (-21,-19) and its radius is $\sqrt{849}$ .

The general form of the equation of a circle that has the same radius as the above circle is standard form.

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3 years ago

Read 2 more answers

What is the solution to the equation -4(2x + 3) = 2x + 6 - (8x + 2)?

MrRa [10]

Answer:

B. x = -8

Step-by-step explanation:

-4(2x + 3) = 2x + 6 - (8x + 2)

-8x -12 = 2x + 6 - 8x -2

(now, "-8" in both terms is cancelled):

-12 = 2x + 6 - 2

(leave 2x alone in second term):

-12 -6 +2 = 2x

-16 = 2x

-16/2 = x

-8 = x

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Quite hard to explain:

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Goose.

Duck.

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3 years ago

If the radius and diameter is 2 decimeter then its diameter is in centimetre​

If the radius and diameter is 2 decimeter then its diameter is in centimetre