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kogti [31]
3 years ago
5

The diameter of a quarter is 2.5 cm. What is it’s circumference?

Mathematics
1 answer:
anastassius [24]3 years ago
7 0

Answer:

7.85 cm

Step-by-step explanation:

The circumference of a circle can be found using the following formula.

c=\pi d

The diameter is 2.5 centimeters. Therefore, we can substitute 2.5 cm in for d.

c=\pi *2.5 cm

Now, find the circumference.

- In terms of pi:

c=\pi *2.5 cm

c= (2.5)\pi  cm

c= 2.5\pi  cm

-Using 3.14 as pi

c=\pi *2.5 cm

c=3.14 *2.5 cm

c=7.85 cm

-Using 3.14159... as pi

c=\pi *2.5 cm

c=7.85398163 cm

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The diameter of a circle is 38 in. Find its area to the nearest whole number.
nikklg [1K]

Answer:

1134

Step-by-step explanation:

Formula for diameter=2 x r

(π is 3.14)

Formula for area= π x r^2

So all you basically have to do is go backwords with the first one then plug the radius into the second one normally

38/2=19

Now just plug it into your second equation

π x 19^2=1134.11494795

And lastly round that to 1134, easy! :)

5 0
2 years ago
What is the common denominator of 1/a + 1/b in the complex fraction 1/a - 1/b over 1/a+1/b?
9966 [12]

Answer:

For this case we have the following fraction:

To find the common denominator, what we must do is rewrite the fraction.

For this, we subtract fractions in the numerator and the sum of fractions in the denominator.

We have then:

We observe that the common denominator is given by the product:

Answer:

the common denominator is:

D)ab

Step-by-step explanation:

4 0
2 years ago
Siri round each number to the place of the underlined digit 7.158 The underlined number is five
monitta
The answer is 7.160 !!
6 0
4 years ago
Tina ate 21 starbursts. If she ate 35% of the package of Starbursts, how many Starbursts are in the package?
mojhsa [17]

Answer:

60 starbursts

Step-by-step explanation:

We can set up an equation to find the answer. 21/x=0.35/1 because we're trying to find how many starbursts make up 100% of the package. So then to solve, we take 21x1 and then divide that by 0.35. From this we find that x=60.

5 0
3 years ago
Which of the following angles is not coterminal with the other three?
jekas [21]

9514 1404 393

Answer:

  b.  17°

Step-by-step explanation:

All of the angles are 2nd-quadrant angles except 17°, which is a 1st-quadrant angle.

  17° is the odd angle

__

When you compute ...

  mod(angle, 360), you get 163, 17, 163, 163.

4 0
3 years ago
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