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2 years ago

If the area of a circle is 58 square feet, find the circumference. A. 22.35 ft. B. 26.99 ft. C. 4.25 ft. D. 42.5 ft.

Mathematics

1 answer:

Fed [463]2 years ago

8 0

Answer:

B. 26.99 ft.

Step-by-step explanation:

The formulas for circumference (C) and area (A) are ...

A = πr²

C = 2πr

Solving the area formula for r, we get ...

r = √(A/π)

Substituting this into the circumference formula gives ...

C = 2π√(A/π) = 2√(πA)

For the given circle, the numbers are ...

C = 2√(3.14×58 ft²) ≈ 26.99 ft

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PSYCHO15rus [73]

Answer:

678.24 cubic in.

Step-by-step explanation:

Ok, first find the area of the base.

3.14×3^2= 28.26

Then multiply that area by the height, which is 8×3=24

24×28.26=678.24

Let me know if you got it!

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1 year ago

Paul's company rents cars to people who are at least 25 years old. Which graph best represents the possible ages of people who c

Talja [164]

Answer:

A number line with a closed circle on 25, with shading to the right.

Explanation:

A closed circle means "greater than or equal to" or "less than or equal to".

A open circle means "less than" or "greater than"

Therefore, since the question says: "who are at least 25 years old", a closed circle is the correct answer.

And says it says "at least 25 years old" it means that it shaded to the right, and that the circle is on the number 25.

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2 years ago

Read 2 more answers

P(x)=6/7x+4 What is P(42)

Natali5045456 [20]

P(42) = (6/7)(42) + 4 = 36 + 4 = 40

4 0

2 years ago

A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found tha

egoroff_w [7]

Answer:

Between 21 years and 75 years

Step-by-step explanation:

Given that a real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 48 years old, with a standard deviation of 9 years.

X the ages of home buyers is N(48, 9)

a) $30\leq x\leq 66\\|x-48|\leq 18\\|x-48|\leq 2\sigma$

Hence using Cheby chev inequality

$P(|x-48|\leq 2\sigma)\geq 1-\frac{1}{2^2} \\=0.75$

b) $25.5\leq x\leq 70.5\\|x-48|\leq 22.5\\|x-48|\leq 1.5\sigma$

$P(|x-48|\leq 1.5\sigma)\geq 1-\frac{1}{1.5^2} \\=0.556$

c) Using normal distribution we have

$P(|x-48|\leq 2\sigma)=0.95$

d) z value is 2.97

Hence x lies between

$(48-9*2.97, 49+9*2.97)\\=(21.27,74.73)$

Between 21 years and 75 years

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3 years ago

Negative six and one third plus twenty over three

nydimaria [60]

Answer:

1/3

Step-by-step explanation:

-6+(-1/3)= -19/3

-19/3 + 20/3 = 1/3

6 0

3 years ago