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3 years ago

What is the circumference of area=64pi mi^2

Mathematics

1 answer:

azamat3 years ago

4 0

Answer:

16pi mi

Step-by-step explanation:

The smallest circumference for a given area is that of a circle with that area. The area is given by ...

A = πr²

so we can find r as ...

64π = πr²

r = √64 = 8 . . . . miles

The circumference of this circle is ...

C = 2πr = 2π·(8 mi) = 16π mi

The circumference of the area is at least 16π miles.

_____

If the shape is not constrained to a circle, the circumference can be anything you like.

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d1i1m1o1n [39]

Answer:

B, 33%

Step-by-step explanation:

Let us find the original price of four chairs without the special deal, and compare it with the deal to find the percent savings.

Step 1:

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Step 2:

We now know the original cost of the 4 chairs, and the price of 4 chairs with a deal. Let us subtract the difference of costs and convert it into a percentage to find percent savings:

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2 years ago

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sasho [114]

Answer:

F: 18

Step-by-step explanation:

find total amount of points

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2 years ago

Read 2 more answers

Question 3

Thepotemich [5.8K]

Answer:

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2 years ago

15 men can do a piece of work in 80 days. If 5 more men are added, how long will it take to complete same piece of work?

tresset_1 [31]

Answer:

Step-by-step explanation:

This is an inverse proportion.

men = k / Time So first we need to find k

k = men * Time Substitute values

k = 15*80

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Now what happens if we increase the number of men to 20? What happens to the number of days.

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20*time = 1200 Now divide by 20

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Answer: time = 60 days

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