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vodka [1.7K]
3 years ago
11

The circumference of the inner circle is 44 ft. The distance between the inner circle and the outer circle is 3 ft. By how many

feet is the circumference of outer circle greater than the circumference of the inner circle? Use 22/7 for pi
Mathematics
1 answer:
Citrus2011 [14]3 years ago
5 0

Answer: 18.86 feet

Step-by-step explanation:

The formula for determining the circumference of a circle is expressed as

Circumference = πD

Where D represents the diameter of the circle.

The circumference of the inner circle is 44 ft. It means that

22/7 × D = 44

22D = 7 × 44 = 308

D = 308/22

D = 14 ft

The distance between the inner circle and the outer circle is 3 ft. This means that the diameter of the outer circle would be

14 + 3 + 3 = 20 ft

Circumference of the outer circle is

22/7 × 20 = 62.86 ft

The number of feet by which the circumference of outer circle is greater than the circumference of the inner circle is

62.86 - 44 = 18.86 feet

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Hello!

To test if boys are better in math classes than girls two random samples were taken:

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To estimate per CI the difference between the mean percentage that boys obtained in calculus and the mean percentage that girls obtained in calculus, you need that both variables of interest come from normal populations.

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