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Radda [10]
3 years ago
15

Find the area of a circle with a circumference of 6.28 units ​

Mathematics
1 answer:
ad-work [718]3 years ago
8 0

Answer 3.14

Step-by-step explanation:

Area= pi*r^2

Circumference=2*pi*r

Area=C^2/4pi= 6.28^2/4*pi which ='s 3.13841

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Y = -5 + 6 -----------
andreyandreev [35.5K]

Answer:

y = -5 + 6=1 is your answer

6 0
3 years ago
Read 2 more answers
Please help!! I’m not sure how to answer this question!!
nlexa [21]
<h3>Answer:  9V</h3>

=============================================================

Reason:

The volume expression of a cone with radius r and height h is

\frac{1}{3}\pi*r^2*h

Let's plug in the given height h = 12 and we'd get

\frac{1}{3}\pi*r^2*h\\\\\frac{1}{3}\pi*r^2*12\\\\\left(\frac{1}{3}*12\right)\pi*r^2\\\\4\pi*r^2\\\\

This is the volume of the first cone. We're told the first cone has a volume of V, so we can say V = 4\pi r^2

We can't find the actual numeric volume because we don't know what value replaces r. So we leave it as is.

The second cone has the same height (h = 12) but the radius is now 3 times in size. Instead of r, we use 3r

Replace every copy of r with 3r. Then simplify

4\pi*r^2\\\\4\pi*(3r)^2\\\\4\pi*9r^2\\\\9(4\pi r^2)\\\\9V\\\\

The radius tripled which results in a volume that's 9 times bigger.

3 0
2 years ago
Pyramid A is a square pyramid with a base side length of 14 inches and a height of 6 inches. Pyramid B has a volume of 3,136 cub
TiliK225 [7]

Answer:

800%

Step-by-step explanation:

The pyramid has a volume equal to (14)^2*(6/3)=392. The pyramid B is (3136)/(392)=8 times bigger than pyramid A. As a percentage, it's 800%

4 0
3 years ago
ILL GIVE BRANILEST PLEASE HELP!
mezya [45]

Answer:

x=60^{\circ}

Step-by-step explanation:

The angle formed by 48+x and the angle marked as 72^{\circ} are co-interior angles and therefore must be supplementary (add up to 180 degrees).

Therefore, we have:

48+x+72=180,\\x+120=180,\\x=\boxed{60^{\circ}}

7 0
3 years ago
Mani,James, and Isidro shared 1/2 of a pie. Which fraction of the whole pie did each of them receive?
bija089 [108]

Answer:

1/6

Step-by-step explanation:

\frac{1}{2}/3= 1/6

3 0
3 years ago
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