If the area of a circle is

Mathematics

1 answer:

ozzi3 years ago

5 0

Answer:

Since area =7.7

$area = \frac{22}{7} {(r)}^{2} \\ {(r)}^{2} = 2.45 \\ r = 1.57$

Then the circumference is

$c = 2pi\times r \\ = 2 \times 3.14 \times 1.57 \\ = 9.859$

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sergij07 [2.7K]

The decrease:
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The ratio of boys to girls in a school is 5:4. if there are 180 students, how many girls are there?

vladimir2022 [97]

Salutations!

The ratio of boys to girls in a school is 5:4. if there are 180 students, how many girls are there?

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2x^2 - 5x + 1 = 3

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2x^2 - 5x + 1 - 3 = 3 - 3

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