3 years ago

The radius of circle A is 4 times greater than the radius of circle B. Which of the following statements is true?

Mathematics

1 answer:

Black_prince [1.1K]3 years ago

3 0

Answer:

Correct answer: C. Ca = 4 Cb

Step-by-step explanation:

Given: Ra = 4 Rb

Ca : Cb = ?

Using the following formula to calculate the circumference of a circle:

C = 2 R π

Cb = 2 Rb π

Ca = 2 Ra π = 2 ·( 4 · Rb) · π = 4 · (2 Rb π) = 4 · Cb

Ca = 4 · Cb

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