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Morgarella [4.7K]
2 years ago
15

I need help with this questions

Mathematics
1 answer:
kaheart [24]2 years ago
6 0

Answer:

1st question

63.63

2nd question

28.3

3rd question

25.1

4th question

70.4

5th question

1404.93

Step-by-step explanation:

1.

area= π×r^2

3.142×4.5squared

radius is 4.5

4.5 squared is 20.25

20.25×3.142 is 63.6255

2.d.p is 63.63

2.

circumference is pi times diameter

3.142×9 is 28.278

1.d.p is 28.3

3.

4×2=8 (diameter)

circumference is pi times diameter

3.142×8=25.136

1.d.p=25.1

4.

11.2×2=22.4(diameter)

circumference is pi times diameter

3.142×22.4=70.3808

1.d.p=70.4

5.

area is pi times radius squared

radius=11.2

11.2 squared is 125.44

3.142×125.44=1404.928

2.d.p=1404.93

hope this helps!

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Ede4ka [16]
The formula in getting the arithmetic sequence:
an = a1<span> + (n – 1)d.
</span>
We can substitute the values in order for us to know how many terms the sequence has.

an = 7373
a1 = 1313
d = 303

an = a1<span> + (n – 1)d
</span>7373 = 1313 + (n-1) 303
7373 = 1313 + 303n - 303
-303n = 1313 - 303 - 7373
303n = -1313 + 303 + 7373
303n = 6363
n = 21

So, there are 21 terms in the sequence given.

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FÓRMULA:

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SE DESPEJA

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