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zepelin [54]
3 years ago
11

Check my answer?

Mathematics
1 answer:
8_murik_8 [283]3 years ago
4 0
B. Compare independent variables
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A square has a side that measures 5.5 units. What is the area of a circle with a circumference that equals the perimeter of the
Alexeev081 [22]

Answer:

Answer choice A) About 38.47 square units

Step-by-step explanation:

Since all four sides of a square have the same length, the perimeter of a square is just 4 times one of the side lengths. The perimeter of the square and therefore the circumference of the circle is 5.5*4=22. The circumference of a circle is 2 times the radius multiplied by pi. The radius of this circle is therefore:

\dfrac{22}{2\pi}\approx 3.503

Since the area of a circle is \pi r^2, the area of this circle is:

\pi \cdot 3.503^2= 3.14\cdot 12.271\approx 38.47

Hope this helps!

4 0
3 years ago
a math test has 25 questions on it if a student incorrectly answers 5 questions on the test what percentage of problems are corr
ikadub [295]

The student would get an 80%.

Since 5 is 20% of 25, subtract 20 from 100 and you get 80%

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What's the perimeter?
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Explanation:
Side 1 - 9
Side 2 - 4
Side 3 - 4
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Side 5 - 11
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Side 8 - 15

Added together: 56
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Step-by-step explanation:

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