**Question:**

## A circle has a diameter of 10 cm. What is its circumference?

**Options:**

A) 3.14 cm

B) 6.28 cm

C) 10π cm

D) 31.4 cm

**Answer:**

**C) 10π cm**

**Solution:**

Circumference = π * Diameter = π * 10 cm = 10π cm.

**Question:**

**Options:**

A) 3.14 cm

B) 6.28 cm

C) 10π cm

D) 31.4 cm

**Answer:**

**C) 10π cm**

**Solution:**

Circumference = π * Diameter = π * 10 cm = 10π cm.