Whats the radius of a circle with circumference 30 cm?

To find the radius of a circle with a circumference of 30 cm, we can use the formula for the circumference of a circle: C = 2πr, where C is the circumference and r is the radius. Given C = 30 cm, we can plug this value into the formula and solve for r.

30 = 2πr r = 30 / (2π) r ≈ 4.77 cm

Therefore, the radius of the circle is approximately 4.77 cm.