Question

What is the circumference of a circle with a diameter of 30 centimetres?

15
60
90
50

Answer 1

90 because it’s closest to the real answer

Answer 2

90 or option C

Explanation:

The formula for finding the circumference of a circle is C = πd

So all we have to do is substitute 30 centimeters for our d.

30 * π ≈ 94.25.

That's closest to 90.

Therefore, 90 or option C is our answer.