Question

The circumference of a circle is 8 TT cm. What is the RADIUS of the circle?

A)
2 cm
B)
4 cm
C)
6 cm
D)
8 cm

Answer 1

To find the radius of the circle,

remember that the formula for the circumference

of a circle is C = 2πr, where r represents the radius of the circle.

Since we're given that the circumference of our circle is 8π,

we can setup the equation 8π = 2πr.

Now to solve for r, we divide both sides of the equation by 2π.

On the right side, the 2's cancel and the π's cancel and we're left with r

and on the left side, the π's cancel and 8 divided by 2 is 4.

So we have 4 = r.

So the radius of the circle is 4 cm.