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Mariulka [41]
3 years ago
7

What is the circumference of this circle r= 2km

Mathematics
1 answer:
gladu [14]3 years ago
7 0

Answer:

6.28 km

Step-by-step explanation:

The formula for circumference is C = 2πr. Just plug in the radius. C = 2π2. 2 times 2 is 4. So, multiply 4π, which is 6.283185307 (rounded to the nearest billionths). Generally, you are supposed to round to the nearest hundredth. The 3 would round the 8 down, leaving 6.28. The unit used to measure the radius, so unless told otherwise by the problem, stick to km. This results in 6.28 km being your final answer.

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Which expression is equivalent to -18a^-2b^5/-12a^-4b^-6
crimeas [40]

Answer:

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Step-by-step explanation:

The applicable rule of exponents is ...

  (a^b)/(a^c) = a^(b-c)

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2 years ago
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Find the measure of angle 3<br> I WILL GIVE BRAINLIEST TO THE CORRECT ANSWER
Mice21 [21]

Answer:

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Step-by-step explanation:

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so,

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3 0
3 years ago
Read 2 more answers
The lengths of two sides of a right triangle are given. find the length of the third side. Round to the nearest tenth if necessa
fomenos
Use cosine rule:

c²=b²+a²-2ba cosC

Right triangle = 90 degrees
cosine 90 degrees = 0

c²=28²+15²-2×28×15×0
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c=√1009
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5 0
3 years ago
PLEASEE HELP
ELEN [110]
X+8

The equation of that line from from picture is -x+4
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Since if is perpendicular we can assume that the equation should be positive. Eliminate the negative answers.
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6 0
3 years ago
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