Chapter 11.7, Problem 1CYU

To determine

To find the circumference of the circle.

Answer to Problem 1CYU

  $37.7$ inches

Explanation of Solution

Given information:

Diameter(d) $=12$ inches.

Formula used:

Circumference (c) of a circle can be calculated using formula $2\times \pi \times r$

Where ‘r’ is the radius $=\frac{d}{2}$

Calculation:

  $c=2\times \pi \times r$

Formula to calculate circumference.

  $=2\times \pi \times \frac{d}{2}$

Since ‘r’ is half of ‘d’

Taking the value of pi as $\frac{22}{7}$

  $=2\times \frac{22}{7}\times \frac{12}{2}$

Simplifying the expression

  $=\frac{264}{7}$

Dividing the numerator by denominator.

  $=37.7$ inches