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Nezavi [6.7K]
3 years ago
7

the circumference of a circle is 11pi inches. what is the area, in square inches, of the circle? express in terms of pi.

Mathematics
2 answers:
zmey [24]3 years ago
8 0
Circumference = 2 * pi * r, where r is the radius
For this circle, the circumference is 11pi, so 11pi=2*pi*radius. Divide both sides by 2pi and you get r is = to 5.5 inches.

Area of a circle is pi*r^2. Since we just saw that r = 5.5 inches, the circle has an area of 5.5 inches * 5.5 inches * pi or 30.25 pi inches squared.
Tomtit [17]3 years ago
8 0

Answer:

30.25 pi

Step-by-step explanation:

The radius is 5.5 cm. So that's the answer.

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7th grade math I need some help
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Answer:

$33.60

Step-by-step explanation:

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4 0
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5 0
3 years ago
30 pts ! The height of the Ferris wheel in feet can be represented by the function 50 cos (π/15(x-10))+52 with time in x seconds
Dahasolnce [82]

h = 50 cos ( pie(x - 10 )/15 ) + 52

80 = 50 cos ( pie( x - 10 )/15 ) + 52

80 - 52 = 50 cos ( pie( x - 10 )/15 )

28 = 50 cos ( pie( x - 10 )/15 )

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cos ( pie( x - 10 )/15 ) = cos ( 56 )

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Thus ;

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Thus the correct answer is exactly what u chose goodjob .....

7 0
3 years ago
Hellllp pleaseeeee !
vfiekz [6]
False, keep it up with the questions.
6 0
3 years ago
Read 2 more answers
The formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by p
yawa3891 [41]
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8 0
3 years ago
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