Chapter 11.7, Problem 5CYU

To determine

To find the circumference of the circle, rounded to the nearest tenth.

Answer to Problem 5CYU

  $22.6$ kilometers

Explanation of Solution

Given information:

Radius(r) $=3.6$ kilometers.

Formula used:

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

For calculations, value of $\pi =\frac{22}{7}$ .

Calculation:

  $c=2\times \pi \times r$

Formula to compute the circumference of the circle.

  $=2\times \frac{22}{7}\times 3.6$

On simplifying the expression.

  $=22.62$

Rounding the figure to the nearest tenth.

  $=22.6$ kilometers.