Question

Question #aa340

Answer 1

The answer is `"192 cm"`.

Explanation:

To find the circumference: `"diameter" xx pi = 2 * "radius" xx pi`

The small circle has a circumference of `2 xx "12 cm" xx pi = 24pi` `"cm"`

To find the larger circle: multiply the circumference of the smaller by `8`, so

`8*24pi" cm" = 192pi` `"cm"`

To find diameter, divide by `pi` to get a final answer of `"192 cm"`.