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3 years ago

Find the circumference of the circle

Mathematics

2 answers:

Law Incorporation [45]3 years ago

8 0

Answer:

Step-by-step explanation:

2 x pi x r = circumfrence

2 x 7 x pi = 43.96

AlladinOne [14]3 years ago

6 0

Answer: 43.96 m

Step-by-step explanation: To find the circumference of the circle shown here, start with the formula for the circumference of a circle which is shown below.

Circumference = 2πr

Notice that the radius of the circle is 7 meters.

So we can plug in 7 meters for <em>r</em> in the formula.

So we have (2)(π)(7m) which is equal to 14π m.

So the circumference of the circle shown here is 14π m.

Remember that π is approximately equal to 22/7 or 3.14 so we can estimate the value of the circumference by plugging in 3.14 for π.

So we have (14)(3.14) which is equal to 43.96.

So the circumference of the circle is

approximately equal to 43.96 m.

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Solnce55 [7]

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2.10 s, 10.40 s.

Step-by-step explanation:

We know that the height of the rocket is given by the function:

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So, let's put the equation on the form $at^2+bt+c=0$ adding $16t^2$ and subtracting $200t$ to each side of the equation; the result is:

$16t^2-200t+350=0$

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According to the equation, that are the times for which the height will be 350 ft; that is because the rocket is going to ascend and then to fail again to the ground.

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