Question

The bicycles at a shop are classified by size according to the diameters of their tires. If a bicycle
has a size of 26 inches, what would the circumference of its tire be?

Answer 1

Answer:

Circumference = 81.692 inches.

Explanation:

We know that the wheel (tire) of a bicycle is circular in shape.

Hence, the circumference of a circle is its perimeter or ellipse.

Circumference of a circle is given by the formula;

$C = 2\pi r$

Where, r represents the radius of a circle.

Given the following data;

Diameter = 26 inches

$Radius = \frac {diameter}{2}$

$Radius = \frac {26}{2}$

Radius = 13 inches

Substituting into the equation, we have;

$C = 2*3.142 *13$

Circumference, C = 81. 692 inches.

Method 2

Circumference is given by the formula;

$C = \pi D$

Where, D represents the diameter of a circle.

Substituting into the equation, we have;

$C = 3.142 *26$

Circumference, C = 81.692 inches.