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Grace [21]
3 years ago
14

What is the circumternence

Mathematics
1 answer:
AfilCa [17]3 years ago
4 0
Circumference of a circle is the distance around the circle. This can be found by using the equation below

2*pi*radius

Our diameter, as shown, is 9cm. Since radius is half of the diameter, our radius is 4.5cm.

Therefore, our circumference is...

2 * pi * 4.5 = 9pi cm total
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Free fall reaches 216km per hour. What is rate in meters per second.? How many meters fall during 20 seconds free fall?
lakkis [162]

Given,

Rate of free fall = 216 km/h

Solution,

km/h to m/s is converted as follows :

216\ \dfrac{km}{h}=216\times \dfrac{1000\ m}{3600\ s}\\\\=60\ m/s

So, the rate of fall is 60 m/s.

If t = 20 s

Assume, initial velocity = 0

It will move under the action of gravity.

Using equation of motion,

h=ut+\dfrac{1}{2}gt^2\\\\h=0+\dfrac{1}{2}\times 10\times 20^2\\\\h=2000\ m

Hence, this is all for the solution.

4 0
3 years ago
Ill give Brainliest. please explain your answers. im so confused on these questions :((
Katen [24]

Answer:

I'll answer the first one. Neither vehicles are crossing the speed limit since both are under 40mph.

Step-by-step explanation:

6 miles every 10 minutes = 36 miles every hour.

15 miles every 25 minutes = 36 miles every hour.

Speed limit = 40 mph

Neither vehicles are crossing the speed limit since both are under 40mph.

Hope this helped! :))

8 0
2 years ago
the ratio of pink marbles to White Marbles Tamara's bag is equal to 1:5 what is the percent of pink marbles
dusya [7]
It would be 20% because if you take 100 times 1/5, which is the same as 100/5, you would get 20, which is 1/5.
8 0
3 years ago
Read 2 more answers
What do I do steps? please help
skad [1K]
Area = Length x Width

so, 88 = (something) x 8
Can you work out the something using mental math?
8 0
3 years ago
You attend a baseball game with friends and visit the snack stand between innings. Soda costs $2 a can, and a box of popcorn cos
horsena [70]

Answer:

I feel that is would be D

Step-by-step explanation:

This is the most reasonable awnser.

8 0
2 years ago
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