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2 years ago

Find the radius of a circle if the circumference is 66cm

Mathematics

2 answers:

FrozenT [24]2 years ago

7 0

Answer:

Approximately 10.5, or 10.5095541.

Step-by-step explanation:

To find the radius given the circumference of a circle, we first have to divide the circumference by pi, or an estimation of 3.14. This will give us the diameter.

Since we know that the radius of a circle is simply half the diameter, we divide the number we got from the problem above by 2. This will give you your answer!

Dennis_Churaev [7]2 years ago

4 0

Answer:

r = 10.50

Step-by-step explanation:

Circumference =

$2\pi \: r$

$66 = 2\pi \: r$

$\frac{66}{2\pi} = r$

r = 10.5

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2 years ago

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2 years ago

A small combination lock on a suitcase has 4 wheels, each labeled with the 10 digits 0 to 9. how many 4 digit combinations are

tamaranim1 [39]

This is the easiest way to solve this problem:

Imagine this represents how many combinations you can have for each of the 4 wheels (each blank spot for one wheel): __ __ __ __

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For the next two do the same process as the one above.

If digits can be repeated? You have ten options for every wheel so it would look like this: 10 10 10 10

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If successive digits bust be different?
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2 years ago

Solve for x. Please help

Andrei [34K]

Answer:

x=3

Step-by-step explanation:

(11-3)+3x+1 = 5x+3

8+3x+1 = 5x+3

9+3x= 5x+3

6=2x

x=3

8 0

2 years ago

Find the radius of a circle if the circumference is 66cm​

Find the radius of a circle if the circumference is 66cm