Question

What is the area of a circle with a diameter of 36 millimeters?

Answer 1

≈1,017.36 or in terms of pi: π324

Explanation:

Formula for area of a circle: π * r ²

r = half of the diameter

Diameter is 36, divide it by 2, radius is 18.

Apply the formula:

π * 18²

π * 324

If pi is rounded to 3.14:

3.14 * 324 = 1,017.36