Question

A circle has a circumference of 45 cm. What is the BEST estimate of the circle’s diameter?

Answer 1

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 2

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.

$BrainiacUser1357$