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myrzilka [38]
4 years ago
15

What is the area of a circle with radius of 3 inches? Use pie =3.14 A .18.84 square roots B .28.26 square roots C .9.42 square r

oots D .113.04 square roots
Mathematics
1 answer:
tatiyna4 years ago
3 0

Answer:

B. 28.26

Step-by-step explanation:

First you have to find the circumference:

R²= 3²=9

Then you multiply your circumference by 3.14 to get you answer:

9·3.14=28.26

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Each interior angle of a regular polygon has a measure of 40.how many sides does the polygon have?​
zysi [14]

<u>Given</u><u> </u><u>Information</u><u> </u><u>:</u><u>-</u>

⠀

  • Each exterior angle of a regular polygon has a measure of 40°

⠀

<u>To</u><u> </u><u>Find</u><u> </u><u>:</u><u>-</u>

⠀

  • The number of sides of the polygon

⠀

<u>Formula</u><u> </u><u>Used</u><u> </u><u>:</u><u>-</u>

⠀

\qquad \star \:  \underline{ \boxed{ \green{  \sf No.~of~sides = \dfrac{360^ \circ}{exterior ~angle}}}} \:  \star

⠀

<u>Solution</u><u> </u><u>:</u><u>-</u>

⠀

Using the formula,

⠀

\sf \dashrightarrow No. ~of~sides= \dfrac{360}{40}  \\  \\  \\ \sf \dashrightarrow No. ~of~sides= \frac{ \cancel{360}}{ \cancel{40} } \\  \\  \\  \sf \dashrightarrow No. ~of~sides= \underline{ \boxed{ \blue { \frak{9}}}} \:  \star

⠀

Thus, the polygon is a nonagon, and hence has 9 sides.

⠀

\underline{\rule{227pt}{2pt}} \\  \\

5 0
3 years ago
An ecologist took samples of several different tundra plants.
Annette [7]
The answer of this question is 6/19. I hope this helps
6 0
3 years ago
Read 2 more answers
12345678910111213141516171819202122232425262728293031323334353637383940414243444564979858
Whitepunk [10]

what is the question

8 0
3 years ago
Suppose that 3000 drivers in Wakanda were randomly breath-tested on 21 April 2019 and 116 were above the limit of 0.05 blood- al
UkoKoshka [18]
4000 drivers were tested
5 0
3 years ago
An Airbus A380 has 1 first class section 1 business class section and 4 economy class sections
Juliette [100K]

Answer:

Yes, more than half are being used.  (292 out of 546 used)

Step-by-step explanation:

The first part of this problem is to determine the total amount of seats on the plane so we can determine what half of the seats would be.

1st class has 14 seats.

Business-class has 64 seats.

And the 4 economy classes have 117 each, meaning 117 * 4 = 468

So the total amount of seats are 14 + 64 + 468 = 546

So half that amount would be 273.

Now we can determine the number of seats being used.

1st class has (6/7) * 14 = 12 seats used

Buisness-class has (7/16) * 64 = 28 seats being used

Economy has 4 * (7/13) * 117 = 4 * 63 = 252 seats being used

So the total amount of used seats would be 12 + 28 + 252 = 292.

Note that 292 is greater than 273, so there is indeed more than half the seats on the plane being used.

Cheers.

7 0
4 years ago
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