Find the circumference of a circle whose diameter is 12 inches.

We know that,

Circumference of a circle = 2πR

Diameter of the circle = 12 inches

then, the radius of the circle = 6 inches.

Circumference of a circle = 2 × \(\frac{22}{7}\) × 6 = 37.71

We know that,

1 inch = 2.54cm

then , 37.71 inches = 37.71 × 2.54 = 95.7072 cm