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3 years ago

What is the circumference of the circle if the radius is 1?

Mathematics

2 answers:

8090 [49]3 years ago

8 0

Answer:

6.28

Step-by-step explanation:

yaroslaw [1]3 years ago

4 0

Answer:

6.28319 is the circumference

Step-by-step explanation:

How to:

2·π·1= 6.28319

2 times pi times radius

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Jeremiah works five days a week if she earns 225 a day how much does he earn per week

kotykmax [81]

Answer:

Step-by-step explanation:

That would be 225 x 5, which is equal to 1125.

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3 years ago

What is the area of the regular octagon below?

pishuonlain [190]

9 plus How many sides nine times

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3 years ago

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elena-14-01-66 [18.8K]

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2 years ago

If 9/10 of cats prefer felix food of the total 500 surveyed,how many do NOT prefer felix

gregori [183]

Answer:

450 cats do NOT prefer felix

Step-by-step explanation:

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3 years ago

a toy manufacturer has designed a new piece for use in building models. It is a cube with side lengths 7 mm and has a 3 mm in di

Ray Of Light [21]

Given that the cubical piece has side (s) 7 mm, and a cylindrical hole of diameter (d) as 3 mm.

The volume of the piece can be calculated as,

$\begin{gathered} \text{Volume of piece}=\text{ Volume of cube}-\text{ Volume of cylinder} \\ V=s^3-\frac{\pi}{4}d^2s \\ V=7^3-\frac{\pi}{4}(3)^2(7) \\ V=343-\frac{63\pi}{4} \\ V\approx293.52mm^3 \\ V\approx293.52\times10^{-9}\text{ }m^3 \end{gathered}$

It is mentioned that the material costs $207 per cubic meter, so the cost (c) of 1 piece is calculated as,

$\begin{gathered} \text{Cost of 1 piece}=\text{ Cost per unit volume}\times\text{ Volume of 1 piece} \\ c=207\times293.52\times10^{-9} \\ c\approx60758.64\times10^{-9} \end{gathered}$

This is the cost (in dollars) for 1 piece.

Given that the manufacturer wants to produce 1,000,000 such pieces, so the total cost (TC) is calculated as,

$\begin{gathered} \text{Total Cost}=\text{ Cost per piece}\times\text{ No. of pieces} \\ TC=60758.64\times10^{-9}\times1,000,000 \\ TC=60758.64\times10^{-9}\times10^6 \\ TC=60758.64\times10^{-3} \\ TC=60.75864 \\ TC\approx60.75 \end{gathered}$

Thus, the total prototypes will cost around $60.75

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1 year ago