If the circumference of a circle is about 15.4 cm, estimate to the nearest whole number the diameter of the circle.

Answer 1

Hello Jessica,

The formula for circumference of a circle is Circumference = π * diameter

So: diameter = Circumference / π = 15.4/ 3.14 = 4.90 cm

The nearest whole number to 4.90 is 5 so the diameter of this circle can be estimated to 5 cm