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2 years ago

A circular "No U-Turn" road sign has a diameter of 20 inches.

Mathematics

1 answer:

Marianna [84]2 years ago

5 0

Answer:

314

Step-by-step explanation:

d=20

20/2=10

10x10=100

A=pi r2

A=3.14x100

A=314

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tankabanditka [31]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

What is the explicit rule for this geometric sequence? a1=2/3;an=9. An-1

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2 years ago

22. One kilometer is approximately 0.62 mile. What fraction represents this length?

bixtya [17]

Answer:

One kilometer is $\frac{31}{50}$ miles

Explanation:

To convert a decimal to a fraction:

1- Write the decimal as a fraction whose denominator is 1

2- Multiply both numerator and denominator by multiples of 10 to eliminate the decimal point

3- Simplify the fraction you have

Now, for the given problem:

The given decimal is 0.62, following the above steps:

Step 1:

$0.62 = \frac{0.62}{1}$

Step 2:

We have two digits after the decimal point, so to eliminate the decimal point, we will multiply the numerator and the denominator by 100

$0.62 = \frac{0.62}{1} * \frac{100}{100} = \frac{62}{100}$

Step 3:

We can note that, in the fraction obtained from step 2, both the numerator and the denominator are divisible by 2, so we simplify as follows:

$\frac{62}{100} = \frac{62/2}{100/2} =\frac{31}{50}$

Hope this helps :)

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2 years ago

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3 years ago