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grigory [225]
3 years ago
14

what is the answer for:   r = 9 ft r = 21 m d = 30 cm  d = 24 cm r = 15.2 in r = 16.01 ft    please answer them i just want the

answer like example the answer for r= 9 ft is 56.52 ft   thanks!!!    
Mathematics
1 answer:
Burka [1]3 years ago
8 0
r-a\ radius\ of\ the\ circle\\\\d-a\ diameter\ of\ the\ circle\\\\a\ circumference\ of\ the\ circle:2\pi r=d\pi\\\\r=9ft\to2\pi r=2\pi\cdot9=18\pi\approx18\cdot3.14=56.52\ (in)\\\\r=21\ m\to2\pi r=2\pi\cdot21=42\pi\approx42\cdot3.14=131.88\ (m)\\\\d=30cm\to d\pi=30\pi\approx30\cdot3.14=94.2\ (cm)\\\\d=24cm\to d\pi=24\pi\approx24\cdot3.14=75.36\ (cm)\\\\r=15.2\ in\to 2\pir=2\pi\cdot15.2=30.4\pi\approx30.4\cdot3.14=95.456\ (in)\\\\r=16.01\ ft\to2\pi r=2\pi\cdot16.01=32.02\pi\approx32.02\cdot3.14=100.5428(ft)
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They take 5 days to drive 679 miles to Seattle, how many miles will they drive each day?
Kisachek [45]

If they take 5 days to drive 679 miles to Seattle. Then the number of miles that they drive each day will be 135.8 miles per day.

<h3>What is speed?</h3>

The distance covered by the particle or the body in an hour is called speed. It is a scalar quantity. It is the ratio of distance to time.

We know that the speed formula

Speed = Distance/Time

They take 5 days to drive 679 miles to Seattle.

Then the number of miles that they drive each day will be

→ 679 / 5

→ 135.8 miles per day.

More about the speed link is given below.

brainly.com/question/7359669

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8 0
2 years ago
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Can someone help me with this real quick?​
valentina_108 [34]

Answer:

11. A) 6x = 13

Step-by-step explanation:

11. Subtract 10 from both sides to make it equal 6x=13

12. For #12... None of the answers seem right? If you distribute and subtract, it should be

-4x + 44 = 66 then

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Sorry if this didn’t help much, I know that 11 is right though ;)

6 0
3 years ago
Need help with 2&amp;3 please .
Vsevolod [243]

Answer:

brainly.com/question/12500028

Step-by-step explanation:

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Margarita [4]
$125.4 is the answer to #1
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7 0
2 years ago
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nadezda [96]
T represents hours, so if c(1.5)=c(t) as it mentioned in the problem, then 1.5 equals hours, and c represents cost, so if cost + time equals nine then I think it's a
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3 years ago
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