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Dovator [93]
4 years ago
8

A wooden toy kit has different painted solids. One solid is a cylinder with a diameter of 2cm and a height of 14cm.

Mathematics
1 answer:
jeka57 [31]4 years ago
8 0

Answer:

Surface are = 94.24 cm2

Cylinders =4,244

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Surface area of a cylinder = 2π (diameter/2) h + 2π (diameter /2)²  

Replacing with the values given

s = 2π (2/2) 14 + 2π (2/2)²

s = 87.96+ 6.28 =94.24 cm2

Since:

1 m2 = 10,000 cm2

40 m2 = 400,000 cm2 (area that one can of paint covers)

We have to divide the area that one can of paint covers by the surface area of each cylinder:

400,000/94.24 = 4244 cylinders

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By replacing you get:

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5^2= (-5)^2 <br> true or false
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what is the critical f-value when the sample size for the numerator is six and the sample size for the denominator is four? use
lubasha [3.4K]

The critical f-value when the sample size for the numerator and the  denominator is given using a two-tailed test will be 0.12 and 14.88.

We have,

The sample size for the numerator = 6,

i.e.

Numerator degree of freedom = 6 - 1 = 5,

And,

The sample size for the denominator = 4,

i.e.

Denominator degree of freedom = 4 - 1 = 3

And,

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So,

The significance level = \frac{0.10}{2} = 0.05

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Using the F-table at significance level 0.05 and check for given degrees of freedom,

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2 years ago
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Answer:

<h2>y=60+25h+0.3r</h2>

Step-by-step explanation:

let y be the total charges

given that the hour is h

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2. For each additional hour= 25h

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total charges

y=60+25h+0.3r

therefore the expression is

y=60+25h+0.3r

   

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3 years ago
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