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pogonyaev
3 years ago
9

What is the circumference of the circle in terms of / pi? The radius is 30 in.

Mathematics
2 answers:
Alinara [238K]3 years ago
5 0
Circumference formula is C= 2 * pi * r C=188.5 (pi 60)
Ksenya-84 [330]3 years ago
4 0

Answer:

Circumference of circle in terms of π is 60\pi\:inches

Step-by-step explanation:

Given: Radius of the circle = 30 inches.

To find : Circumference of the circle.

When r is the radius of the circle, then circumference is equal to 2\pi r.

Here, radius , r = 30 inches.

So, Circumference = 2\pi r=2\times\pi\times30=60\pi

Therefore, Circumference of circle in terms of π is 60\pi\:inches

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The area of the sector formed by the 110 degree central angle is 40 units squared what is the radius
olga2289 [7]
We know that
area of the circle=pi*r²

if 360° (full circle) has an area of-------------> pi*r²
110°------------------------------> 40 units²
pi*r²=40*360/110--------> pi*r²=130.91------> r²=130.91/pi-----> r²=41.69
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the answer is
the radius is 6.46 units
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