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DerKrebs [107]
3 years ago
10

If the diameter of a circle is 6 what is the area

Mathematics
2 answers:
Ad libitum [116K]3 years ago
6 0

Answer:

28.26

Step-by-step explanation:

A = pi radius squared

A = 3.14 x 9

A= 28.26

sammy [17]3 years ago
4 0

Answer: A=28.26 units²

Step-by-step explanation:

<h3>The formula for the area of a circle is A=πr²</h3>

You find the radius of the circle by dividing 6 by 2

because diameter is twice the radius.

Then you plug in 3 as radius to the equation.

So the equation looks like this:

A=3.14×3²

Then solve the equation:

A=3.14×9

A=28.26 units²

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1.The angle of elevation of a jet plane from a point R on the ground is 60°. After a flight of
egoroff_w [7]

Answer:

<u>Diagram is not so perfect</u>

<u>OR = distance travelled by the jet plane</u><u>.</u>

Step-by-step explanation:

Let point J be the jet plane and OJ be the constant height at jet plane is flying and OR be the distance jet plane is travelling.

h =

1700 \sqrt{3}

Now,

From the figure i drew (1st)

taking 60 as reference angle,

tan60° = p/b

or,

tan60 = 1700 \sqrt{3}  \div b

b \:  = 1700 \sqrt{3}  \div tan60

so, b = 1700m

inital distance = 1.7km(OR)

now,

tan 30 = p/b

tan30 = 1700 \sqrt{3}  \div b \\ or \: b = 1700 \sqrt{3}  \div tan30

so, b = 5100 m

so, final distance = 5.1 km(OR)

Now,

distance travelled = final distance - initial distance

distance travelled = 5.1 km - 1.7km

distance travlled = 3.4 km

Now,

time = 17 seconds

= 0.00472 hour.

Now,

speed = d/t

or, speed = 3.4/0.00472

so, speed = 720.3389km/hr

so, speed = 720 km/hr approximately

5 0
2 years ago
Solve each proportion.<br><br> 4/9=10/x <br><br> Wat is x?
Fynjy0 [20]

Answer:

x=22.5

Step-by-step explanation:

90=4x

x=22.5

Hope this helps!

6 0
3 years ago
Which is the 9th term of the sequence which has a first term of 1 and has a common ratio of 1.5
noname [10]
Hey!
So what you can do is:
1 x 1.5 = 1.5(2nd term)
1.5 x 1.5=2.25(3rd term) x 1.5=3.375(4th term) x 1.5 = 5.0625(5th term)

5.0625 x 1.5=7.59375(6th term)x1.5=<span> 11.390625

</span>11.390625 x1.5= 17.0859375(8th term)x1.5=<span> 25.62890625</span>(9th term)

The answer is D!
Hope this helps!

5 0
4 years ago
Read 2 more answers
Hello! Please answer (c). I'll put 16 points for this answer! I'm in middle school, not college. Please reply and take your time
Svet_ta [14]

G= (-1,3)

H= (-4,0)

I= (3,-2)

Please give Brainliest!

Hope this helps!

Kenny

4 0
3 years ago
The south beach diet was given to a volunteer group of 25 people who were atleast 25 pounds overweight. Eighteen people from the
Dahasolnce [82]
D. Nothing, since there was no control group.
3 0
3 years ago
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