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babunello [35]
3 years ago
15

Suppose the area of a circle is 4π. What is its diameter?

Mathematics
2 answers:
mart [117]3 years ago
6 0
Area=pi times radius^2 so

if area=4pi=pi times r^2
4 times pi=r^2 times pi
divide both sdies by pi
4=r^2
square root
2=radius since legnth cannot be negative

radius=1/2 diamters
2 radius=diameter
2(2)=diameter=4
diameter=4
Ganezh [65]3 years ago
6 0
A=4\pi=\pi r^2\\
4\pi=\pi r^2\\
r^2=4\\
r=2\\\\
d=2r\\
d=2\cdot2\\
d=4
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Answer:

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Step-by-step explanation:

Since the angles are alternate-interior, both angles A and B equal the same amount. To figure out the value of <em>x</em>, you'd need to set up your equation like this:

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You would need to solve for <em>x</em>, which should equal to 30.

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r-ruslan [8.4K]

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The length of the third side of a triangle has to continually be among (but not equal to) the sum and the distinction among the alternative facets. As an instance, take the example of two, 6, and seven. and consequently, the 0.33 facet length has to be extra than four and less than eight.

The regulation of Cosines to calculate the unknown aspect, then use the Law of Sines to find the smaller of the opposite angles and then use the 3 angles add to 180° to find the final attitude.

Learn more about triangles here brainly.com/question/2437195

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Step-by-step explanation:

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