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Dennis_Churaev [7]
3 years ago
7

What is the approximate circumference of a circle with a radius of 42.1 km?

Mathematics
2 answers:
Damm [24]3 years ago
7 0
Circumference of circle = 2*pi*r
                                     = 2*22/7*42.1
                                     = 264.4 km

Therefore, the circumference of the circle is 264.4 km
harina [27]3 years ago
4 0
C.264.4 that should answer your question

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Answer: the answer is 224cm3

6 0
3 years ago
The temperature was 78°F at 3 P.M. Each hour for
polet [3.4K]

Answer:

  66 °F

Step-by-step explanation:

At 4 P.M., the temperature had decreased by 3° from the temperature at 3 P.M., so was ...

  4 P.M. temp = 78 °F -3° = 75 °F

This was repeated until 7 P.M.

  5 P.M. temp = 75 °F -3° = 72 °F

  6 P.M. temp = 72 °F -3° = 69 °F

  7 P.M. temp = 69 °F -3° = 66 °F

The temperature at 7 P.M. was 66 °F.

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Of course the repeated subtraction can be simplified using multiplication. The subtraction of 3° four times is equivalent to the subtraction of . . .

  (3°)(4) = 12°

That is, the temperature at 7 P.M. is ...

  78 °F -3°×4 = 78 °F -12° = 66 °F

6 0
2 years ago
Can the set of lengths be the side lengths of a right triangle?
andreyandreev [35.5K]

Answer:

B. No.

Step-by-step explanation:

We have been given 3 side lengths 7 ft, 12 ft, 17 ft. We are asked to determine, whether the given set of lengths can form a right triangle or not.

We will use Pythagoras theorem to solve our given problem, which states that the square of hypotenuse of a right triangle is equal to the sum of squares of two legs of right triangle.

17^2=12^2+7^2

289=144+49

289>193

Since the sum of  squares of both legs is less than square of hypotenuse, therefore, the given set of lengths can not be the side lengths of a right triangle.

4 0
3 years ago
Read 2 more answers
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love history [14]
R/9 = -21
Multiply by 9
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4 0
2 years ago
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Answer: It should be an 8th grade level

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6 0
3 years ago
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