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renzermarx

Answer:

C) 15 cm is the best estimate.

Step-by-step explanation:

The exact answer is not there, so 15 is the best estimate.

You can use this equation to help you:

d=C/π

Where d is the diameter.

C is the circumference.

And the last one is Pi.

You know that C = 45, so divide that by Pi (3.14).

45/3.14159 = 14.32

The closest answer is 15.

Hope this helps! Have a great day!

Answer:

  • The best estimate of the circle's diameter is 15cm.

Step-by-step explanation:

  • Circumference = 2πr = 45cm
  • => 2 x π x r = 45 cm
  • => 2 x 22/7 x r = 45 cm
  • => 44/7 x r = 45
  • => 44r/7 = 45
  • => 44r = 315
  • => r = 7.16 (Rounded)
  • => Dia. = 7.16 x 2
  • => Dia. = 14.32
  • => Dia. ≈ 15 cm

Conclusion:

Therefore, the best estimate of the circle's diameter is 15cm.

Hoped this helped.

[tex]BrainiacUser1357[/tex]

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