The diameter of a circle is given to be 11 mm. It is required to find the circumference.
Recall the formula for the Circumference of a circle with diameter, d:
![C=\pi d](https://img.qammunity.org/2023/formulas/mathematics/high-school/4mkash3xbv1k0yoiexwvsolvp2d8x0dvan.png)
Substitute the diameter d=11 mm and the constant π=3.14 into the formula:
![C=3.14\cdot11=34.54\text{ mm}](https://img.qammunity.org/2023/formulas/mathematics/college/ao6nqfzi9mhcb4qts59nrch9l4brus7pbh.png)
Hence, the circumference of the circle is 34.54 mm.
The answer is 34.54 mm.