Question

1. find the circumference. 22 cm

Explanation:

Step1: Identify diameter and formula

The diameter $d=22$ cm. Circumference formula: $C=\pi d$

Step2: Substitute value and calculate

$C=\pi \times 22 = 22\pi$ cm. Using $\pi=\frac{22}{7}$, $C=22\times\frac{22}{7}=\frac{484}{7}\approx69.14$ cm.

Answer:

$22\pi$ cm (or approximately 69.14 cm, or $\frac{484}{7}$ cm)