The radius of a circle is 8 cm. Find the circumference of the circle. Use 3.14 for Pi.

Mathematics

2 answers:

Llana [10]3 years ago

7 0

Answer:

Hello! answer: 50.24

Step-by-step explanation:

To find circumference you just have to do diameter × pi Since we arent given the diameter we have to figure it out BUT REMEMEBER diameter is just twice the radius so 8 × 2 = 16 so 16 is our diameter! Now we just multiply that by pi so 16 × 3.14 = 50.24 So 50.24 is the circumference! Hope this helps!

9966 [12]3 years ago

6 0

Answer:

50.24 cm

Step-by-step explanation:

For the easier computation of a circle's circumference, pi's value is taken to be 3.14 (π = 3.14). Let's see a few examples below to polish the concept of the circumference. Find the circumference of the circle with a radius of 8 cm. = 50.24 cm.

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What is the arc length of a circle that has a 6-inch radius and a central angle that is 65 degrees? Use 3. 14 for pi and round y

noname [10]

C=2πr

C=2π6

C=37.6991118431

That's the arc length of the whole circle, i.e. the arc length of 360°.

65° is 18.055555555555555555555555555556% of 360°, (65/360*100)
so 18.055555555555555555555555555556% of 37.6991118431 is
6.8067840827819444444444444444444. Rounded to the nearest hundredth, the answer is 6.81 inches.

That's real pi, lets see if it makes a difference to use "stupid pi".

C=2πr

C=2π6

C=37.68

That's the arc length of the whole circle, i.e. the arc length of 360°.

65° is 18.055555555555555555555555555556% of 360°, (65/360*100)
so 18.055555555555555555555555555556% of 37.68 is
6.803333333333333333333333. Rounded to the nearest hundredth, the answer is 6.80 inches.
Yep makes a difference. That's why you don't use stupid pi. 3.14159 is what we always used in engineering, or just the pi button and using a ton of digits.

Answer: 6.80 inches.

3 0

3 years ago

Odds only, please. Thank you!

wariber [46]

Step-by-step explanation:

I am sure you are clear. Thanks. You can follow me to get more answers.