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slamgirl [31]
3 years ago
8

The circumference of a circle is 11/pi. What is the area, in square inches, of the circle? Express your answer in terms of /pi.

Mathematics
1 answer:
eimsori [14]3 years ago
6 0
So since 11/pi doesn't means 11 divided by pi but it means 11 pi

circumference=2pir
if circumerence=11pi
2pir=11pi
solve for r (radius)
divide both sides by pi
2r=11
divide by 2
r=5.5

area=pir^2
area=pi5.5^2
area=pi30.25

answer is area=30.25pi in^2
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Answer:

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Step-by-step explanation:

Write equations to represent the situation.

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The system of equations we need to solve is:

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We can solve using the substitution method.

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y = 20 - x

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Substitute y for 20 - x

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x + 60 - 3x = 50     Combine like terms. 'x' and '-3x' are alike because they both have 'x'.

60 - 2x = 50          Start isolating 'x'.

60 - 60 - 2x = 50 - 60     Subtract 60 from both sides.

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-2x = -10

-2x/-2 = -10/-2       Divide both sides by -2 to isolate 'x'.

x = -10/-2           -2x/-2 becomes 'x'. -2/-2 cancels out.

x = 5          Number of multiple choice questions

Therefore there are 5 multiple choice questions.

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Answer:

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