Question

Please help me with my math ASAP!

Answer 1

Hello !

Answer:

`\large\boxed{\sf Option\ 3 : 66cm}`

Explanation:

The circumference of a circle is given by
`\sf C=2*\pi* r`, where r is the radius.

Given :

• d = 21 cm
• r = d/2 = 10.5 cm
• π =3.14

Let's replace r with its value in the previous formula :

`\sf C=2* 3.14* 10.5`

`\sf C=65.94`

`\boxed{\sf C\approx 66cm}`

Have a nice day