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Strike441 [17]
3 years ago
8

What is the circumference of a circle with radius 3.5cm. Take [Pi=22/7]​

Mathematics
2 answers:
Nitella [24]3 years ago
5 0

Answer:

22cm

Step-by-step explanation:

Circumference of a circle = 2πr

π = 22/7

r = 3.5

Circumference of a circle = 2 × (22/7) × 3.5

Circumference of a circle = 22cm.

GarryVolchara [31]3 years ago
5 0

Answer:

22cm

Step-by-step explanation:

  • circumference of a circle=2πr
  • 2×22/7×3.5
  • 2×22×0.5
  • 44×0.5
  • 22
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3 years ago
What percentage of the mile times range from 7.25 to 9.375?
Step2247 [10]

1. We assume, that the number 9.375 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 9.375 is 100%, so we can write it down as 9.375=100%.

4. We know, that x is 7.25% of the output value, so we can write it down as x=7.25%.

5. Now we have two simple equations:

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9.375/x=100%/7.25%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 7.25% of 9.375

9.375/x=100/7.25

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9.375=13.793103448276*x       - we divide both sides of the equation by (13.793103448276) to get x

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7.25% of 9.375=0.6796875

8 0
3 years ago
A train leaves Roseville heading east at 6:00 am at 40 miles per hour. Another eastbound train leaves on a parallel track at 7:0
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Answer:

At 11:00 am the both trains will be at same distance away from Roseville

Step-by-step explanation:

The first train was 40 miles away from Roseville at 7:00 am

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We will make equation for that situation

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Please help, need to get this done quick!
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  our X is 30 because 3x = 90 and if we divide that by 3 then we are left with 30, I knew it was equal to 90 degrees because of the little red box that symbolizes a 90 degree angle.

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